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
Nearly 80 percent of all sudden cardiac arrests happen at home.
7
The average person who stops smoking requires one hour less sleep a night.
79
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
It takes about 20 seconds for a red blood cell to circle the whole body.
102
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
You would need to smoke between 20,000-40,000 joints to be at risk of dying of a THC overdose.
12