How long does a cup of coffee keep you awake? Caffeine stimulates the nervous system. People often consume it to stay alert, but how long do effects last, and how does it impact sleep? This depends on many factors, including the amount of caffeine ingested at once and an individual's metabolism. Learn to estimate how long the effects of caffeine last here. Read now
NINDS health-related material is provided for information purposes only and does not necessarily represent endorsement by or an official position of the National Institute of Neurological Disorders and Stroke or any other Federal agency. Advice on the treatment or care of an individual patient should be obtained through consultation with a physician who has examined that patient or is familiar with that patient's medical history.
Melatonin. Melatonin is a naturally occurring hormone that increases at night. It is triggered by darkness and its levels remain elevated throughout the night until suppressed by the light of morning. Although melatonin does not appear to be particularly effective for treating most sleep disorders, it can help sleep problems caused by jet lag and shift work. Simple exposure to light at the right time, however, might be just as effective. If you take melatonin, be aware that it can interfere with certain blood pressure and diabetes medications. It’s best to stick with low doses—1 to 3 milligrams for most people—to minimize side effects and next-day drowsiness.
Clinical trials have not proven chamomile to be helpful for insomnia. Chamomile is an herb traditionally used to reduce muscle tension, soothe digestion, and reduce anxiety, which may help induce sleep. Sip a cup of hot chamomile tea after dinner, but don't drink it too close to the bed or you may have to get up in the middle of the night to go to the bathroom. Hops, passionflower, and ashwagandha are other herbs that are often used for insomnia. As with chamomile, they have not proven their effectiveness in studies.
And a comfortable mattress. If your mattress is more than seven years old, it could be worn out—and costing you a better night’s sleep. If your bed shows signs of wear (like deep impressions) or you consistently wake up sore in the morning, it might be time to think about investing in a new sleep surface. Shameless plug: take a look at our selection of mattresses if you’re in the market!
Making it through each sleep stage is crucial to getting high-quality sleep, but exactly how many times do you need to go through the sleep cycle? Many people argue that they get by just fine on very little sleep. However, research shows that only a tiny fraction of people can function well on fewer than eight hours of sleep each night. Sleep expert David Dinges, PhD, estimates that, over the long haul, perhaps one person in a thousand can function effectively on six or fewer hours of sleep per night.
Carefully read the package insert that comes with your medication. Pay careful attention to the potential side effects and drug interactions. Many common medications, including antidepressants and antibiotics, can cause dangerous interactions with both prescription and over-the-counter sleeping pills. For many sleeping pills, certain foods such as grapefruit and grapefruit juice must also be avoided.
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Ahh, valerian. Relaxing, calming, and downright amazing, if you have trouble sleeping, then get some valerian root. Valerian inhibits the GABA - gamma aminobutryic acid - neurotransmitters that are responsible for sleep. It's this amino acid that dampens nerve activity, causing the brain to become calm and relaxed. Those with insomnia often have reduced GABA levels.
If you suffer from insomnia, try to stick to a routine at bedtime, and go to bed at the same time every day. Avoid caffeine and nicotine before bedtime, and get plenty of exercise during the day. A dark room free of noise may also help-consider buying a “white noise” device if your bedroom is noisy. If you are having trouble falling asleep, try relaxation techniques like breathing exercises, meditation, or yoga.
These changes in the body's circadian rhythm coincide with a busy time in life. For most teens, the pressure to do well in school is more intense than when they were kids, and it's harder to get by without studying hard. And teens also have other time demands — everything from sports and other extracurricular activities to working a part-time job to save money for college.
Adjustable beds also allow you to change the angle of your upper body and legs. This can be particularly helpful for people who experience conditions like lower back pain or swelling, since these adjustments can reduce back tension and promote circulation to improve comfort. Acid reflux keeps many people up as well, and elevating the upper body can make a significant difference.