Weight loss while you are sleeping

　　You may think that sleep and weight loss are so far-off, but there is substantial scientific evidence suggesting a strong association between the two. One study reports that people who sleep 5 hours or less per night generally weigh more than those who get a 7-hour sleep. Other research has shown that inadequate sleep compromises efforts to lose weight through dieting. The link between sleep and weight loss is attributed mainly to hormones. 

　　The production of the hormones leptin and ghrelin which work to control feelings of hunger and fullness is said to be influenced by how much or how little sleep a person has. When you do not get enough sleep, your leptin (satiety hormone) levels tend to be low, and your ghrelin (appetite hormone) levels high. This means that you are likely to overeat as your appetite is stimulated and satiety is suppressed. So if you want to keep your natural weight loss mechanisms in place, make sure to get around eight hours of sleep every night. 

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