The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
Your heart rate can rise as much as 30% during a yawn.
69
Kissing an infection-free partner is good for your teeth!
141
In Japan, condoms are commonly sold 'door to door'!
54
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The average human body contains enough iron to make a small nail.
50
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