It takes about 20 seconds for a red blood cell to circle the whole body.
102
When you get blackout drunk, you don't actually forget anything; your brain wasn't "recording" in the first place.
23
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
On average, there's 100 billion neurons in the human brain.
83
A fetus develops fingerprints at eighteen weeks!
32
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14