Your heart rate can rise as much as 30% during a yawn.
69
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
A woman's sense of smell is most sensitive during ovulation.
34
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Smoking while pregnant increases the chances of spontaneous abortions (miscarriages) stillbirths and premature labor.
77
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160