20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your tongue is the only muscle in your body that is attached at only one end.
173
The human brain is more active during sleep than during the day.
28
The lense of the eye continues to grow throughout a person's life.
34
Every hour one billion cells in the body must be replaced.
17
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Your heart rate can rise as much as 30% during a yawn.
69
Lack of water is the #1 trigger of daytime fatigue.
148