- Bone Strength: Human bones are four times stronger than concrete1.
- Saliva Production: Over a lifetime, the human body produces enough saliva to fill two swimming pools1.
- Stomach Acid: The acid in your stomach is strong enough to dissolve zinc1.
- Nose Power: Your nose can recognize and remember 50,000 different scents1.
- Heat Emission: In just 30 minutes, the human body gives off enough heat to bring a gallon of water to a boil1.
- Skin Renewal: The entire surface of your skin is replaced every month, meaning you have about 1,000 different skins in your lifetime2.
- Sweat Pores: The human body has about 2.5 million sweat pores2.
- Skin Shedding: Every minute, you shed over 30,000 dead skin cells2.
- Bacteria: There are more bacteria in a human mouth than there are people in the world3.
- DNA Length: If uncoiled, the DNA in a human body would stretch 10 billion miles, from Earth to Pluto and back