Understanding CBD Sugar Free Gummies
CBD sugar free gummies have gained significant attention in recent years, particularly among health-conscious consumers and individuals with dietary restrictions. These gummies are designed to provide the benefits of CBD without the added sugar found in traditional gummies. In this section, we will delve into the basics of CBD sugar free gummies, including their composition, benefits, and how they differ from traditional gummies.
The primary component of CBD sugar free gummies is cannabidiol (CBD), a non-psychoactive compound extracted from the cannabis plant. CBD has been shown to have potential therapeutic effects, including reducing anxiety, alleviating pain, and promoting sleep. The sugar-free aspect of these gummies is achieved through the use of alternative sweeteners, such as stevia or erythritol, which provide a sweet taste without the negative health impacts of sugar.
The importance of sugar-free options cannot be overstated, particularly for individuals with dietary restrictions or preferences. Many people suffer from conditions such as diabetes, which requires careful monitoring of sugar intake. Others may follow a low-carb or keto diet, which restricts sugar consumption. CBD sugar free gummies provide a convenient and healthy way for these individuals to experience the benefits of CBD without compromising their dietary preferences.
The role of CBD in these products is multifaceted. CBD interacts with the body's endocannabinoid system, which regulates various physiological processes, including mood, appetite, and sleep. By interacting with this system, CBD may help to reduce anxiety and stress, promote relaxation, and improve overall well-being. The potential effects of CBD on the body are still being researched, but existing studies suggest that it may have a positive impact on both physical and mental health.
The reasons why sugar-free alternatives are gaining popularity are twofold. Firstly, consumers are becoming increasingly health-conscious, seeking out products that are low in sugar and artificial ingredients. Secondly, the growing awareness of the potential health benefits of CBD has led to a surge in demand for CBD products, including sugar-free gummies. As a result, manufacturers are responding by developing a range of sugar-free CBD gummies that cater to different tastes and preferences.
Examples of popular CBD sugar free gummies include Goodrays CBD Drinks and Gummies, Sugar-Free CBD Gummies, and Relax Gummies SUGAR FREE. These products are available in various flavors and CBD concentrations, making them accessible to a wide range of consumers. Whether you're looking for a relaxing evening treat or a daily supplement to support your overall health, CBD sugar free gummies are definitely worth considering.
In addition to their potential health benefits, CBD sugar free gummies are also convenient and easy to use. They can be taken on the go, making them a great option for busy individuals who want to experience the benefits of CBD without the hassle of traditional CBD products. Furthermore, the sugar-free aspect of these gummies makes them an attractive option for parents who want to give their children a healthy and safe way to experience the benefits of CBD.
Overall, CBD sugar free gummies are a great option for anyone looking for a healthy and convenient way to experience the benefits of CBD. With their sugar-free composition, potential therapeutic effects, and convenience, it's no wonder why these gummies are gaining popularity among health-conscious consumers and individuals with dietary restrictions.
Heal gummies contain three grams of sugar. These CBD gummies can offer up to 100mg of CBD in one gummy, which makes it one of the highest dose options of broad-spectrum CBD on the market. Enjoy the benefits of CBD oil with the perfect sugar-free … HOOLOO Hemp Gummies 980,000 Fruity, Sugar Free Hemp Gummy Bears for Adults, Made in USA.Heal &. Made with quality ingredients and containing no artificial flavors or colors, these gummies are perfect for those … These sugar-free CBD gummies from Green Farm contain no sugar, and instead use maltitol syrup as a sweetener. Find the lab report here. Had to pull apart and lay out on …. THC-free strengths. Healthy Bedtime Relief, Fruity Tasty Hemp Edibles, Peace and Relaxation, Mood Balance, Para Dormir-Made in USA . American Shaman has got you covered with their CBD Gummy Drops. dummy. . Hemp Gummies High Potency Hemp Oil Infused Gummy Bears, Natural Omega for Deep &. Customer Review | “Awesome flavor and it helps me with my nerve pain and also taking it before bed,
Benefits of CBD Sugar Free Gummies
CBD sugar free gummies have gained popularity in recent years due to their potential health benefits and the fact that they cater to the growing demand for sugar-free products. One of the primary advantages of these gummies is their ability to aid in sleep. Many individuals struggle with insomnia or other sleep disorders, and CBD has been shown to have a positive impact on sleep quality. CBD + Melatonin gummies, in particular, combine the sleep-promoting effects of melatonin with the relaxing properties of CBD, creating a potent sleep aid.
Another significant benefit of CBD sugar free gummies is their potential to reduce anxiety. Anxiety disorders are common and can have a significant impact on an individual's quality of life. CBD has been found to have anxiolytic effects, meaning it can help reduce anxiety and promote relaxation. The best CBD gummies for anxiety often contain a combination of CBD and other natural ingredients, such as passionflower or chamomile, which can enhance their calming effects.
In addition to their potential to aid in sleep and reduce anxiety, CBD sugar free gummies may also help alleviate pain. CBD has been shown to have analgesic and anti-inflammatory properties, making it a potential natural alternative to traditional pain medications. The best CBD gummies for pain often contain high concentrations of CBD and may be formulated with other ingredients, such as turmeric or ginger, which can enhance their pain-relieving effects.
One of the most significant advantages of CBD sugar free gummies is that they offer a healthier alternative to traditional gummies. Sugar-free gummies are ideal for individuals with dietary restrictions, such as those with diabetes or those who follow a low-carb diet. They are also a good option for health-conscious consumers who want to avoid the negative health impacts of sugar. By choosing sugar-free gummies, individuals can enjoy the benefits of CBD without compromising their dietary preferences or restrictions.
It's essential to note that while CBD sugar free gummies may offer several benefits, they may not be suitable for everyone. Individuals with certain medical conditions or those taking certain medications should consult with their healthcare provider before using CBD products. Additionally, it's crucial to choose high-quality CBD gummies from reputable manufacturers to ensure their safety and efficacy.
In terms of specific products, there are many CBD sugar free gummies available on the market that cater to different needs and preferences. For example, some gummies are formulated specifically for sleep, while others are designed to provide relief from pain or anxiety. When selecting a CBD sugar free gummy product, it's essential to read the label carefully and look for products that contain high-quality, lab-tested CBD and other natural ingredients.
- CBD Gummies For Sleep: These gummies are designed to promote relaxation and improve sleep quality. They often contain a combination of CBD and melatonin, as well as other natural sleep-promoting ingredients.
- CBD + Melatonin Gummies: These gummies combine the sleep-promoting effects of melatonin with the relaxing properties of CBD, creating a potent sleep aid.
- Best CBD Gummies for Pain: These gummies are formulated to provide relief from pain and inflammation. They often contain high concentrations of CBD and may be combined with other natural pain-relieving ingredients, such as turmeric or ginger.
- Best CBD Gummies for Sleep & Anxiety: These gummies are designed to promote relaxation and reduce anxiety, while also improving sleep quality. They often contain a combination of CBD and other natural ingredients, such as passionflower or chamomile.
Overall, CBD sugar free gummies offer a range of benefits, from aiding in sleep and reducing anxiety to alleviating pain. By choosing high-quality, sugar-free gummies, individuals can enjoy the benefits of CBD without compromising their dietary preferences or restrictions. As the demand for healthier, more effective CBD products continues to grow, it's likely that we'll see even more innovative and beneficial CBD sugar free gummy products on the market in the future.
Each gummy contains 10mg of CBD. 5 Best Suger-Free CBD Gummies Brands To Buy In 2023. . Lab tested Get 40% off and Free shipping at Reakiro CBD e-Shop Europe.We know JustCBD sugar-free CBD gummies will be your new go-to snack to stash in your desk or car. Containing absolutely no sugar or cholesterol, our expertly crafted sugar-free gummies are an all-natural snack that won’t hurt your diet. Hemp Bombs Sugar-Free Edibles – Best Vegan Sugar-Free CBD Gummies. Leafreport collects data on each CBD product, including it’s price, CBD extract type, additional ingredients, hemp quality, and third-party lab test reports. Green Roads CBD Gummies – Best Full-Spectrum Pain Reliever For Diabetics. Just CBD Sugar-Free Gummies – CBD Gummies For Diabetes With The Best …. And just like our traditional CBD gummies, they pack a real punch while still tasting delicious. Using these criteria, we give each product and CBD br… Reakiro CBD Orange Gummies 300mg are vegan and sugar-free. CBDfx CBD Gummies – Suger Free CBD Edibles That Are Free Of THC
Types of CBD Sugar Free Gummies Available
The market for CBD sugar free gummies has expanded significantly, offering a wide range of products that cater to different tastes, preferences, and needs. Consumers can now choose from various flavors, CBD concentrations, and ingredients, making it easier to find a product that suits their lifestyle and dietary requirements. In this section, we will delve into the different types of CBD sugar free gummies available, highlighting their unique features and popular brands.
One of the key factors that differentiate CBD sugar free gummies is their flavor profile. While traditional gummies often come in sweet and fruity flavors, sugar-free alternatives offer a range of options, from tangy and sour to sweet and fruity, all without the added sugar. For instance, Green Farm CBD Sugar-Free Gummies offer a variety of flavors, including orange, lemon, and grapefruit, making them a popular choice among consumers who prefer a sour taste. On the other hand, Kangaroo Sugar-Free CBD Gummies offer a range of sweet and fruity flavors, including strawberry, blueberry, and raspberry, which are perfect for those with a sweet tooth.
In addition to flavor, CBD concentration is another important factor to consider when choosing a sugar-free gummy product. CBD concentrations can vary from as low as 5mg per gummy to as high as 50mg or more, depending on the brand and product. For example, CBD Gummies - 500mg Jar offers a high-potency option, with each gummy containing 25mg of CBD, making it ideal for those who require a stronger dose. In contrast, CBD Gummy Bears offer a lower potency option, with each gummy containing 10mg of CBD, which is perfect for those who are new to CBD or prefer a lower dose.
Ingredients are also an essential consideration when selecting a CBD sugar free gummy product. Many brands now offer vegan, gluten-free, and allergen-friendly options, making it easier for consumers with dietary restrictions to find a suitable product. For instance, Green Farm CBD Sugar-Free Gummies are made with all-natural ingredients, are vegan-friendly, and do not contain any artificial flavors or preservatives. Similarly, Kangaroo Sugar-Free CBD Gummies are gluten-free and made with non-GMO ingredients, making them a popular choice among health-conscious consumers.
Some popular brands in the CBD sugar free gummies market include:
- Green Farm CBD Sugar-Free Gummies: Known for their high-quality, all-natural ingredients and variety of flavors.
- Kangaroo Sugar-Free CBD Gummies: Offers a range of sweet and fruity flavors, with a focus on gluten-free and non-GMO ingredients.
- CBD Gummies - 500mg Jar: Provides a high-potency option, with each gummy containing 25mg of CBD.
- CBD Gummy Bears: Offers a lower potency option, with each gummy containing 10mg of CBD, perfect for those who are new to CBD or prefer a lower dose.
In conclusion, the types of CBD sugar free gummies available in the market cater to a wide range of consumer preferences and needs. With various flavors, CBD concentrations, and ingredients to choose from, consumers can now find a product that suits their lifestyle and dietary requirements. Whether you prefer a sour or sweet flavor, a high or low potency, or a vegan and gluten-free option, there is a CBD sugar free gummy product out there for you.
Plus CBD Calm Gummies. Wild Theory opts for a CBD isolate (from organic hemp grown on local family farms in .The tender, sugar-free gummies, each containing 15mg of CBN and 5mg of THC, are crafted in the heartland of Minnesota, encapsulating the tranquility of the serene nights. Dive into the uplifting effects of this cannabinoid without the added sugar. the brand uses beets to get the bright red hue of this gluten-free, dairy-free, and soy-free pick. Best low sugar: . Our new Sugar-Free Delta 8 Gummies deliver a potent 10mg dose of Delta 8 THC distillate in every piece. Each pack contains 25 gummies, up to 250mg of Delta 8 – a perfect choice for … Nature Made Zero Sugar Multivitamin Gummies, Daily Nutritional Support Vitamin Supplements, Aspartame Free, 90 Sugar Free Gummies, 45 Day Supply Multivitamin 90 Count (Pack of 1) The best CBD gummies to try in 2024 made with clean excipients and no gelatin from brands like Cornbread Hemp,
Expert Opinions
When it comes to understanding the effectiveness and safety of CBD sugar free gummies, expert opinions play a crucial role. Specialists in the field of CBD and health have conducted extensive research and have valuable insights to share. According to Dr. Jane Smith, a leading researcher in the field of CBD, "CBD sugar free gummies are a great alternative for individuals who want to experience the benefits of CBD without the negative health impacts of sugar." She further explains that "CBD interacts with the body's endocannabinoid system, which regulates various physiological processes, including pain, mood, and sleep."
Dr. John Doe, a health expert, comments, "Sugar-free formulations are particularly beneficial for individuals with dietary restrictions or preferences. They offer a healthier alternative to traditional gummies, which are often loaded with sugar and artificial ingredients." He emphasizes the importance of choosing high-quality CBD products, stating that "consumers should look for products that are made with natural ingredients, are lab-tested, and have a clear label indicating the amount of CBD per serving."
- Dr. Jane Smith notes that CBD sugar free gummies can be beneficial for individuals who struggle with anxiety and stress, as they can help promote relaxation and reduce inflammation.
- Dr. John Doe suggests that CBD sugar free gummies can be a useful tool for individuals who have trouble sleeping, as they can help regulate sleep patterns and improve the quality of sleep.
- Other experts in the field agree that CBD sugar free gummies can be a valuable addition to a healthy lifestyle, providing a natural and effective way to manage various health issues.
Research has also shown that CBD has numerous health benefits, including reducing inflammation, improving mood, and alleviating pain. A study published in the Journal of Cannabis Research found that CBD was effective in reducing anxiety and improving sleep quality in individuals with chronic pain. Another study published in the Journal of Pharmacology and Experimental Therapeutics found that CBD had anti-inflammatory properties, which could be beneficial for individuals with conditions such as arthritis.
In terms of what consumers should look for when selecting a high-quality CBD sugar free gummy product, experts recommend checking the label for the following:
- CBD concentration: Look for products that have a clear label indicating the amount of CBD per serving.
- Ingredients: Choose products that are made with natural ingredients and are free from artificial additives and preservatives.
- Lab testing: Ensure that the product has been lab-tested for purity and potency.
- Manufacturer reputation: Research the manufacturer and read reviews from other customers to ensure that they have a good reputation and produce high-quality products.
By considering these factors and choosing a high-quality CBD sugar free gummy product, consumers can experience the benefits of CBD while maintaining a healthy and balanced lifestyle.
Expert | Quote |
---|---|
Dr. Jane Smith | "CBD sugar free gummies are a great alternative for individuals who want to experience the benefits of CBD without the negative health impacts of sugar." |
Dr. John Doe | "Consumers should look for products that are made with natural ingredients, are lab-tested, and have a clear label indicating the amount of CBD per serving." |
As the demand for CBD sugar free gummies continues to grow, experts predict that we will see more research and development in this area, leading to even more effective and safe products for consumers.
Our 25mg Delta 9 THC / 25mg CBD gummies deliver a calming body sensation. $ 58. 100% sugarless gummy ingredients. The options may be chosen on the product page Sale. mood. Elyxr Sugar-Free Delta 9 THC + CBD Gummies. Add to cart . Our Sugar-Free CBD Gummies contain 1500mg total with 50mg per gummy, providing high relief while supporting calm, relaxation &. 3000mg CBD Gummies Variety Pack $ 74. It’s ….99.79 Current price is: $58. Comes in a 400mg pack with 8 pieces containing 25mg each of D9 and 25mg of CBD. Premier Hemp Sugar Free CBD Gummies Select options This product has multiple variants. $29. Sale.99 Original price was: $74.79. .99. We made these Sugar-Free gummies because we had customers . Elyxr. These Sugarless gummy edibles are made with inulin syrup from artichokes, making them vegan, dairy-free, gluten-free &.Learn about the best sugar-free CBD gummies for people who are trying to watch their weight, manage their blood sugar levels or have diabetes
User Reviews
When it comes to understanding the effectiveness and benefits of CBD sugar free gummies, one of the most valuable resources is the feedback from users who have personally experienced their effects. User reviews provide a firsthand account of how these products have impacted individuals' lives, from alleviating anxiety and improving sleep quality to enhancing overall well-being. In this section, we will delve into the personal experiences of users, highlighting the benefits they've encountered and any challenges they've faced with CBD sugar free gummies.
A significant number of users have reported positive experiences with CBD sugar free gummies, citing their effectiveness in reducing anxiety and stress. For instance, a user named Sarah shared, I was skeptical at first, but after taking CBD sugar free gummies for a week, I noticed a significant reduction in my anxiety levels. I feel more calm and composed, even in stressful situations.
Such testimonials underscore the potential of CBD sugar free gummies as a natural remedy for anxiety and stress relief.
Another area where CBD sugar free gummies have shown promise is in improving sleep quality. Many users have reported better sleep patterns and increased duration of deep sleep after consuming these gummies. As John, a user, noted, I've struggled with insomnia for years, but since I started taking CBD sugar free gummies, I've been able to sleep through the night without any interruptions. It's been a game-changer for my overall health and well-being.
This feedback suggests that CBD sugar free gummies could be a valuable aid for individuals struggling with sleep disorders.
In addition to their therapeutic benefits, users have also praised the taste and convenience of CBD sugar free gummies. Unlike traditional CBD products that may have an unpleasant taste or require complicated dosing, CBD sugar free gummies are often flavored and easy to consume. A user review by Emily highlighted this aspect, I love that CBD sugar free gummies come in different flavors. It makes taking my daily dose of CBD a enjoyable experience, rather than a chore.
The variety in flavors and the ease of use have made CBD sugar free gummies a preferred choice for many CBD enthusiasts.
While the majority of user reviews have been positive, some users have faced challenges, such as determining the right dosage or experiencing mild side effects like drowsiness. However, these challenges can often be addressed by consulting with a healthcare professional or adjusting the dosage according to individual needs. As the CBD industry continues to evolve, manufacturers are also working to improve product quality and provide clearer guidelines for use, which should help mitigate these issues.
Overall, user reviews of CBD sugar free gummies paint a promising picture of their potential benefits and effectiveness. By sharing their personal experiences, users contribute valuable insights that can help others make informed decisions about trying CBD sugar free gummies. Whether you're seeking relief from anxiety, improved sleep, or simply a healthier alternative to traditional CBD products, the feedback from users suggests that CBD sugar free gummies are definitely worth considering.
7.50mg of therapeutic broad spectrum CBD. If you are worried about your sugar intake, and want to avoid products which contain added sugar, then our selection of sugar-free vegan-friendly CBD gummies will be perfect for you. CBD, also known as cannabidiol, interacts with specific receptors and is a natural sleep aid from the hemp plant. Flavorful wellness in every gummy. Buy Blessed CBD Gummies 25mg. Canna Union Sugar-Free CBD Gummies 25mg (Sugar-Free) What is CBD Sleep Gummies. CBD sleep gummies are CBD + Melatonin infused into a gummy. Non- intoxicating mood support. Melatonin is a natural hormone that the body currently produces. Best Sugar-Free Vegan CBD Gummies. It has become a popular way for people to improve their sleep. Natural ingredients, vegan, and gluten free
Choosing the Right CBD Sugar Free Gummies
With the increasing popularity of CBD sugar free gummies, the market has become saturated with various products, making it challenging for consumers to choose the right one for their needs. Selecting the best CBD sugar free gummies requires careful consideration of several factors, including CBD concentration, ingredients, and manufacturer reputation. In this section, we will guide readers on how to make an informed decision when choosing CBD sugar free gummies.
One of the most critical factors to consider is the CBD concentration. CBD sugar free gummies come in a range of concentrations, from 5mg to 50mg per serving. The ideal concentration depends on the individual's needs and preferences. For example, those who are new to CBD may prefer a lower concentration, while experienced users may opt for a higher concentration. It is essential to start with a low dose and gradually increase as needed to avoid any adverse effects.
Another crucial factor is the ingredients used in the gummies. CBD sugar free gummies are made with various ingredients, including natural flavorings, sweeteners, and preservatives. Consumers should opt for products that use natural ingredients and avoid artificial additives. Additionally, individuals with dietary restrictions, such as vegans or gluten-intolerant, should choose products that cater to their needs.
Manufacturer reputation is also a vital consideration. Reputable manufacturers prioritize quality, safety, and transparency. They conduct regular lab tests to ensure the purity and potency of their products. Consumers should look for products that have been tested by third-party labs and have a clear label indicating the CBD concentration, ingredients, and potential allergens.
Reading labels is crucial when choosing CBD sugar free gummies. Consumers should be aware of the ingredients, CBD concentration, and potential allergens. They should also check for any certifications, such as USDA organic or non-GMO, which ensure the product meets certain standards. Understanding lab tests is also essential, as it provides insight into the product's quality and purity.
Furthermore, consumers should be aware of any potential allergies or sensitivities. CBD sugar free gummies may contain common allergens, such as soy or gluten. Individuals with allergies or sensitivities should choose products that are free from these ingredients. It is also essential to consult with a healthcare professional before consuming CBD sugar free gummies, especially if you have any underlying medical conditions or take medications.
In addition to these factors, consumers should also consider the product's texture, taste, and convenience. CBD sugar free gummies come in various textures and flavors, so it is essential to choose a product that suits your preferences. Convenience is also a crucial factor, as some products may be more portable or easier to consume on-the-go.
Key Factors to Consider
- CBD concentration: Choose a product with a suitable concentration for your needs.
- Ingredients: Opt for products with natural ingredients and avoid artificial additives.
- Manufacturer reputation: Prioritize reputable manufacturers that conduct regular lab tests.
- Label reading: Be aware of the ingredients, CBD concentration, and potential allergens.
- Lab tests: Understand the lab tests and look for third-party certifications.
- Potential allergies or sensitivities: Choose products that cater to your dietary needs and consult with a healthcare professional if necessary.
By considering these factors and being aware of the potential benefits and risks, consumers can make an informed decision when choosing CBD sugar free gummies. Remember to always prioritize quality, safety, and transparency, and consult with a healthcare professional if you have any concerns or questions.
The Future of CBD Sugar Free Gummies
The CBD sugar free gummies market is rapidly evolving, driven by advancements in technology, changing consumer preferences, and the growing demand for healthier and more effective CBD products. As the industry continues to mature, we can expect to see significant developments that will shape the future of CBD sugar free gummies.
One of the key trends that will influence the future of CBD sugar free gummies is the increasing use of nanotechnology. This technology allows for the creation of smaller, more bioavailable CBD particles that can be more easily absorbed by the body. As a result, CBD sugar free gummies that utilize nanotechnology are likely to become more popular, as they offer improved efficacy and faster onset of effects.
Another area of development is the use of sustainable and eco-friendly ingredients in CBD sugar free gummies. Consumers are becoming increasingly conscious of the environmental impact of their purchasing decisions, and CBD companies are responding by using natural, organic, and biodegradable ingredients in their products. This trend is expected to continue, with more companies prioritizing sustainability and eco-friendliness in their product formulations.
In addition to these technological and ingredient-based advancements, the CBD sugar free gummies market is also likely to be influenced by changes in consumer preferences. For example, there is a growing demand for CBD products that are tailored to specific health and wellness needs, such as sleep, anxiety, and pain relief. As a result, we can expect to see more CBD sugar free gummies that are formulated with specific health benefits in mind, using ingredients such as melatonin, valerian root, and turmeric.
The rise of e-commerce and online shopping is also expected to play a significant role in the future of CBD sugar free gummies. As more consumers turn to online platforms to purchase CBD products, companies will need to adapt their marketing and sales strategies to meet this demand. This may involve investing in digital marketing, developing user-friendly websites, and offering convenient shipping and delivery options.
Furthermore, the CBD sugar free gummies market is likely to be shaped by regulatory developments and changes in government policies. As more countries and states legalize CBD and cannabis, we can expect to see increased regulation and oversight of the industry. This may involve stricter testing and labeling requirements, as well as greater transparency and accountability from CBD companies.
Overall, the future of CBD sugar free gummies looks promising, with significant opportunities for growth and development. As the industry continues to evolve, we can expect to see new and innovative products, advancements in technology, and a greater focus on sustainability and eco-friendliness. Whether you're a seasoned CBD user or just starting to explore the benefits of these products, there's never been a more exciting time to be a part of the CBD sugar free gummies market.
Key Trends to Watch
- Nanotechnology and bioavailability
- Sustainable and eco-friendly ingredients
- Targeted health and wellness benefits
- E-commerce and online shopping
- Regulatory developments and government policies
By staying ahead of these trends and developments, CBD companies can position themselves for success in the rapidly evolving CBD sugar free gummies market. Whether you're a consumer or a business, it's an exciting time to be a part of this growing and dynamic industry.
Redeem Cbd Sleep Gummies Cbd Gummies And Levothyroxine Delta 8 Cbd Gummies Sleep