circadian-rhythm-best-time-to-work

Pulled up this images from Wikipedia. It’s the human Circadian rhythm.

Looks like the best time to work is around 10am in the morning and then between 2pm to 4pm. So probably about 4 hours a day. So now all your slackers who keep getting caught “wasting time” on Facebook and Youtube at the office have a valid scientific reasoning. :)