For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
There's 100 trillion good bacteria living in your body.
17
Your thumb is about the same size as your nose.
124
Held in farts enter your bloodstream and are bad for your body.
26

