3 ms·
Be in bed by midnight, the circadian clock is your friend http://en.wikipedia.org/wiki/File:Biological_clock_human.svg http://en.wikipedia.org/wiki/File:Biolog
by konad 16y ago
Be in bed by midnight, the circadian clock is your friend
http://en.wikipedia.org/wiki/File:Biological_clock_human.svg http://en.wikipedia.org/wiki/File:Biological_clock_human.svg