3 ms·
Artificial lighting changes the time when you become tired.
by pjscott 14y ago
Artificial lighting changes the time when you become tired.
- vidarh 14y agoOne of the reasons why I'll turn down the inside light in the evening.
- grannyg00se 14y agoAnd don't forget f.lux :) http://stereopsis.com/flux/ http://stereopsis.com/flux/