Your heart rate can rise as much as 30% during a yawn.
69
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
You have no sense of smell when you're sleeping!
72
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
The human brain is insensitive to pain.
76
The whiter your tongue, the more germs there are on it.
88
A fetus develops fingerprints at eighteen weeks!
32