The average sperm cell swims at 8 inches per hour.
76
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The average person's skin weighs twice as much as their brain.
131
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
