10 Things Your Body Does That Science Can't Explain

Only around 10% of the human population are left-handed and we're not entirely sure why.

The fact that humans are so lopsided in general is baffling enough to scientists, as most of the rest of the animal kingdom do not display any preference to one side of their body over the other (apart from some apes and, weirdly, polar bears who are generally left-handed).

What we do know is that left-handedness is a genetic trait, but that's not really the confusing part.

Even with the abnormal asymmetry taken as a given, the statistics in themselves are also a little weird. Archeological evidence suggests that the 10% figure for lefties has remained pretty much steady throughout history. This means that we're not just seeing either the tail end of a dying breed, or the beginning of the left-handed uprising, but a consistent, if small, section of society with their hands on backwards.

Another odd thing is that it's not like lefties' brains are always wired completely backwards. Often, a lefty brain is the same as the brains of right-handers, many of them are even right-footed and many right-handers are left-footed.

Generally speaking, you would have thought that with such heavy right-handed dominance, the recessive left-handed tendency would have died out by now, but it hasn't, even with all of the weird societal taboos and fears that has arisen around left-handed people throughout history.