Basics

The Significance of Sleep Everything that happens during the waking hours has meaning for sleep, both quantitative and qualitative. Just as the length of our waking period affects our deep-sleep period, which we think, feel and do during our waking hours is also important to our life of sleep. Conve ...Continue Reading

Sleep And Chronic Illness An illness that lasts for a very long time and usually cannot be cured completely is called as chronic illness. However, with the help of diet, exercise, and certain medicines chronic illnesses can be controlled. Chronic Illness Examples of chronic illness include heart di ...Continue Reading

Sleep And Depression Depression is a mood disorder that is characterized by unhappiness, or "having the blues." People with depression can have many types of sleep problems. The Symptoms Of Depression Include The Following: Lack of energy An increase or decrease in the need for sleep. ...Continue Reading

Rhythms of Sleeping and Waking Sleep, and its organization of various phases, is indispensable to human life. However, the rhythmic alternation between waking and sleeping is just as important. Whereas researchers in the 1960s and 70s were more concerned with understanding the inner structure of sl ...Continue Reading

Sleep and Aging Sleep and Aging Overview: Several generalizations can be made regarding sleep and aging characteristics. Compared with younger persons, elderly persons tend to achieve less total nighttime sleep. However, it cannot be assumed that elderly persons require less sleep. Sleep relate ...Continue Reading

Power Nap Power nap is also called as short nap or catnap usually between 10 to 30 minutes long taken in the middle of the day in order to give energy for the next part of the day. Power naps are not same as regular naps, so you won’t feel groggy if you take one. This type of sleep pattern ...Continue Reading

The Meaning of Sleep Disturbances Sleep disturbances are not illnesses; they are symptoms of physical, mental, and spiritual problems. The causes of sleeplessness and insomnia (Causes of Insomnia) can be physical ailments, mental imbalance, or spiritual one-sidedness. Viewed in this way, sleep distu ...Continue Reading

Delta Sleep System Delta sleep system is also referred as slow wave sleep. It is the term used to describe the 3 and 4 stages of NREM sleep. Delta sleep system occurs in these 3 and 4 stages of NREM. In most adults these two stages are completed within the first two 90 minute sleep cycles or withi ...Continue Reading

How Much Sleep Is Enough? Animal studies suggest that sleep is as vital as food for survival. Rats, for example, normally live 2–3 years, but they live only 5 weeks if they are deprived of REM sleep and only 2–3 weeks if they are deprived of all sleep stages—a timeframe similar to ...Continue Reading

Caffeine Caffeine is a drug that is naturally produced in the leaves and seeds of many plants. Caffeine can also be produced artificially and added to certain foods. It is found naturally in sixty plants including tea leaf, coffee bean, kola nut and cacao pod. People consume caffeine on a daily ba ...Continue Reading