Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Men have larger hearts; women's hearts beat faster.
77
Kissing an infection-free partner is good for your teeth!
141
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Only 1 person in 2 billion will live to be 116.
49