The average tastebud lives only 10 days before it dies and is replaced by a new one.
15
Fingernails grow nearly 4 times faster than toenails!
30
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
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Pain occurs when sounds are above 130 db.
123
Your thumb is about the same size as your nose.
124
At age 70, more than 70 percent of men are still potent!
29
You have no sense of smell when you're sleeping!
72