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
Human thigh bones are stronger than concrete!
63
The lifespan of a tastebud is ten days.
130
Kissing an infection-free partner is good for your teeth!
141
Music has the ability to repair brain damage and return lost memories.
62
Your ears secrete more earwax when you are afraid than when you aren't.
229
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39