It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Tigers can see 6 times better at night than humans.
305
Human hair and fingernails continue to grow after death.
7
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Your thumb is about the same size as your nose.
124
Your heart will pump about 212 million liters in its lifetime.
26
The human brain uses approximately as much energy as a 10 watt light bulb.
120