Enamel is hardest substance in the human body.
61
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
A human being loses an average of 40 to 100 strands of hair a day.
133
Tigers can see 6 times better at night than humans.
305
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
The human eye blinks an average of 4,200,000 times a year.
233