During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Your hair grows faster in the morning than at any other time of day.
91
People who sleep late have more mental stamina and can outperform early risers.
33
The human heart creates enough pressure to squirt blood 30 ft.
37
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
On average, there's 100 billion neurons in the human brain.
83
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
You inhale about 700,000 of your own skin flakes each day.
29