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
Fidgeting can burn about 350 calories a day.
201
In older people, memory is best early in the morning and then declines during the late afternoon.
33
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
From the age of thirty, humans gradually begin to shrink in size.
1
Poor eyesight (myopia) is associated with higher IQ.
232
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Phobatrivaphobia is fear of trivia about phobias.
39