Your heart rate can rise as much as 30% during a yawn.
69
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The human brain has the capacity to store everything that you experience.
4k
Human hair and fingernails continue to grow after death.
7
Dieters who sleep more take off more fat that those who sleep less.
159
Redheads require up to 20% more anesthesia to be knocked out.
112