When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
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
There's 100 trillion good bacteria living in your body.
17
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Held in farts enter your bloodstream and are bad for your body.
26
If you hold farts in during the day, they'll just come out when you sleep.
16
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22