睡得比你所需应该睡的时间长了会减弱你的睡眠系统，当你降低了你先前的觉醒度，暴露于阳光中，你的活动水平和你的身体体温都处于低水平太久。
Sleeping longer than you need to will weaken your sleep system, as you reduce your prior wakefulness, exposure to sunlight, activity levels, and your body temperature at a low for too long.
你醒来的那个循环点（轻睡、熟睡、REM睡）会影响你之后的感觉，其影响甚至比你睡觉的长短还大。
The point in that cycle (light sleep deep sleep and REM sleep) at which you wake can affect how you feel later and may even have a greater impact than how much or little you have slept.
你醒来的那个循环点（轻睡、熟睡、REM睡）会影响你之后的感觉，其影响甚至比你睡觉的长短还大。
The point in that cycle (light sleep deep sleep and REM sleep) at which you wake can affect how you feel later and may even have a greater impact than how much or little you have slept.
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