Yawns are more contagious among people with closer relationships.
163
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A human being loses an average of 40 to 100 strands of hair a day.
133
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The human brain is more active during sleep than during the day.
28
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
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