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Top 8 Biggest Mysteries About The Human Body You Need To Know

7. Viruses

Top 8 Biggest Mysteries About The Human Body You Need To Know

There are in fact millions of living things contained in your body. The microbes that live in (and on) us actually account for a few pounds of our body weight, and they have plenty of good reason to be there. They aid digestion, heal cuts and help us battle illness. The thing is that the majority of them are viruses, and no-one has a clue as to what purpose they serve.

8. Contagion of laughter

Top 8 Biggest Mysteries About The Human Body You Need To Know

Powerful emotions can actually cause the brain activity of different people to sync up, as has been discovered by scientists. Human beings are actually 30 times more likely to laugh when in a social situation, and it’s thought that laughter is contagious because we are innately empathetic as a species. Our brains release endorphins when we laugh, and these chemicals help to make us feel safe and at ease.

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