My daughter would like to know why we have a dominant side. I’m pretty darn curious too.
In: Biology
there is a simple rule in evolution: what works faster, survives. if you have to think about using the left or the right hand to grab a branch while climbing, the chance that you will fall down is much bigger than when you instinctively use the right hand. the same with throwing a stone. also there is something called muscle memory. your muscles learn how to precisely do things and remember it (its not in your muscles but an unconcious part of your brain). now if you have to train both sides, it would take longer and also would result in a better side.
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