很多缺乏足够睡眠的人记忆力差劲，而且他们的协调能力也不行。

Many sleep-deprived people have poor memories and lack proper co-ordination.

当研究对象晚上保证足够睡眠时，他们减去的脂肪要多出55%。

Study subjects lost about 55 percent more fat when they got ample sleep at night.