An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
The average human body contains enough iron to make a small nail.
50
A sneeze can travel as fast as 100 miles per hour.
43
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
When you get blackout drunk, you don't actually forget anything; your brain wasn't "recording" in the first place.
23
35,000 people in the U.S. will die from the flu annually.
6