Our brains have a negativity bias and will remember bad memories more than good ones.
15
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Poor eyesight (myopia) is associated with higher IQ.
232
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515