Enamel is hardest substance in the human body.
61
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human brain has the capacity to store everything that you experience.
4k
Every year your body replaces 98% of your atoms.
119
Yawns are more contagious among people with closer relationships.
163
Your body is creating and killing about 2.4 million red blood cells per second.
17
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197