- The length from your wrist to your elbow is the same as the length of your foot.
- Your heart beats 101,000 times a day. During your lifetime it will beat about 3 billion times and pump about 400 million litres (800 million pints) of blood.
- Your mouth produces 1 litre (1.8 pints) of saliva a day.
- The human head contains 22 bones.
- On average, you breathe 23,000 times a day.
- Breathing generates about 0.6g of CO2 every minute.
- On average, people can hold their ...