Your heart rate can rise as much as 30% during a yawn.
69
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
More people have a phobia of frogs than rats.
41
From the age of thirty, humans gradually begin to shrink in size.
1
Lack of water is the #1 trigger of daytime fatigue.
148
It is possible to go blind from smoking too heavily.
50
Pain travels through your body at 350 ft. per second.
36

