More people use blue toothbrushes, than red ones!
66
Fidgeting can burn about 350 calories a day.
201
On average, there's 100 billion neurons in the human brain.
83
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
A man's beard grows fastest when he anticipates sex.
239
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22