Why do humans tend to sit with one leg over the other rather then both legs down?

Question

I would of thought biology would like us to be symmetrical for maximum comfort. But after sitting down for some time humans tend to put one leg over the other? Is there a biological reason for this?

In: 122

Answer 1

My assumption (from my own experience) is that it is just comfortable because it allows you to take all the weight off one of your legs, letting it hang freely in the air.