Sleep Cycle是一款能够分析您的睡眠模式，并在最合适的时间叫您起床的闹钟应用。让您享受最充分和舒适的睡眠。Sleep Cycle利用iPhone内置的重力感应设备检测您睡梦中的动作，从而确定最适合您起床的时间，并在“到点”的时候叫醒您。 Sleep Cycle浅层睡眠唤醒 ...

The ideal nap length, according to scientists, is 20 to 25 minutes. Any longer and you’ll fall into a deeper sleep cycle, which lasts for about 90 minutes. This means when you wake up you will ...