减肥三大特别关键词：水、睡觉和朋友！

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.
你可能会想：睡觉跟减肥的关系远了去了！但事实上，科学证据表明这两者间有紧密的联系。一项研究表明每天睡眠小于5小时的人比7小时的人更容易长胖。另一项研究表明睡眠不充足会降低节食减肥的效果。这两者间的关系主要由激素引起。

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.
瘦素和胃饥饿素是控制饥饿感和饱腹感的激素，它们的含量受睡眠时间的影响。当你的睡眠不够充足时，你的瘦素（饱腹感激素）含量下降，而胃饥饿素（饥饿感激素）含量上升，这代表你很可能会因为两种激素不平衡而吃得过多。所以，想要保持自然减肥机制的正常运行，请保证你有每天8小时的充足睡眠。