Your body is creating and killing 15 million red blood cells per second.
50
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
In older people, memory is best early in the morning and then declines during the late afternoon.
33
The average person's skin weighs twice as much as their brain.
131
The human brain is more active during sleep than during the day.
28
Your skin is actually an organ.
88
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23