5:06:00 AM
1.The stomach’s digestive acids are strong enough to dissolve zinc. , the cells renew so quickly that the acids don’t have
time to dissolve it.
2. 240 Km can be the length by the lungs wich contain over 300,000 million capillaries . If
they were laid end to end,
3. A
mans testicles manufacture 10 million new sperm cells each day – enough that he
could repopulate the entire planet in only 6 months!
4.
Human bone is as strong as granite in supporting weight. A block of bone the
size of a matchbox can support 9 tonnes – that is four times as much as
concrete can support.
5.
Each finger and toenail takes six months to grow from base to tip.
6. The largest organ in the
body is the skin. In an adult man it covers about 1.9m2 (20sq ft). The skin
constantly flakes away – in a lifetime each person sheds around 18kg (40 lb) of
skin.
7. When you sleep, you grow by about 8mm (0.3in). you will shrink
back to your former height. The reason is that your cartilage discs are
squeezed like sponges by the force of gravity when you stand or sit.
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