Votre corps en chiffres

The average human heart beats about 2.5-3 billion times in a 75-year lifetime. That is roughly 100,000 beats per day or 72 beats per minute at rest.

The human body contains approximately 37.2 trillion cells. About 3.8 million cells die every second, but your body constantly produces new ones.

Most of your body replaces itself over 7-10 years. Skin cells renew every 2-3 weeks, red blood cells every 4 months, and the liver regenerates in about a year. However, some cells like neurons last your entire lifetime.

Your blood vessels could wrap around the Earth 2.5 times (100,000 km). Your brain processes 86 billion neurons simultaneously. You produce enough saliva in your lifetime to fill two swimming pools.