During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
A sneeze can travel as fast as 100 miles per hour.
43
Your heart will pump about 212 million liters in its lifetime.
26
Your thumb is about the same size as your nose.
124
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95
The human sigh acts as a physiological reset button.
23