Sex burns about 360 calories per hour.
860
You mostly breathe from only one nostril at a time!
75
Human teeth are almost as hard as rocks!
47
The average person's skin weighs twice as much as their brain.
131
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
When you get blackout drunk, you don't actually forget anything; your brain wasn't "recording" in the first place.
23
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57