All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
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 idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The human sigh acts as a physiological reset button.
23