Nerve Impulses: Nerve impulses travel at speeds of up to 250 mph (402 km/h), allowing for rapid communication within the body
Skin Regeneration: The skin sheds about 500 million cells each day, and it completely regenerates every 27 days.
Blood Vessels: If you were to lay out all the blood vessels in an adult body end to end, they could circle the Earth about 2.5 times.
Muscle Power: The human jaw muscle can exert a force equivalent to 200 pounds (90.7 kg) on the molars.
Heart's Pumping Power: The heart pumps about 2,000 gallons (7,571 liters) of blood through the body every day.
Blinking Frequency: On average, a person blinks about 15-20 times per minute, which amounts to around 1,200 times per hour.
Digestive Enzymes: The stomach's gastric acid is so potent that it can dissolve a razor blade over time, due to the combination of hydrochloric acid and enzymes.