Your heart rate can rise as much as 30% during a yawn.
69
One or two alcohol drinks a day can be anti-inflammatory.
75
You can alleviate a tickly throat by scratching your ear.
9
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
Our brains have a negativity bias and will remember bad memories more than good ones.
15
The average sperm cell swims at 8 inches per hour.
76
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22