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

It shifts the compression of your glutes and thighs and feet, the same reason hospital beds have moving air mattresses these days to prevent bed sores.