3 ms·
Because it is such an important function, and because light disrupts sleep, it is important to sleep mostly in the dark. If it gets light naturally in time to w
by hirundo 5y ago
Because it is such an important function, and because light disrupts sleep, it is important to sleep mostly in the dark. If it gets light naturally in time to wake you up when you need to, great. If it gets light earlier, not great.