For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Our Right Lungs takes more air than our left lung.
194
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
The human brain doesn't stop developing until about 25 years old.
102