It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
The average person who stops smoking requires one hour less sleep a night.
79
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
Your heart rate can rise as much as 30% during a yawn.
69
Dieters who sleep more take off more fat that those who sleep less.
159
Your body is creating and killing 15 million red blood cells per second.
50
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Banging your head against a wall uses 150 calories an hour.
57