3 ms·

Let your eyes fully adapt to the dark every evening before you go to sleep. (takes about half an hour) You may need to get thicker curtains, depending on where

Let your eyes fully adapt to the dark every evening before you go to sleep. (takes about half an hour) You may need to get thicker curtains, depending on where you live.

restalis 12y ago
What difference will the darkness make? I only read about this 10000 lux of natural light exposure scarcity. Don't we get the needed darkness by sleeping?
- PepeGomez 12y ago
  No, the eyes actually have to be adapted to and used in the dark.