If you are cold you are more likely to be hungry because you use energy to keep warm.
144
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
The human sigh acts as a physiological reset button.
23
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
The average sperm cell swims at 8 inches per hour.
76
Your body is creating and killing about 2.4 million red blood cells per second.
17
The human brain doesn't stop developing until about 25 years old.
102