Sometimes when I cross my legs, my leg goes numb. This also happens when I sit, "Indian-style". Googling for "don't cross your legs" results in a page proclaiming,
People who are habitual leg-crossers have more acid crystals stored in the feet than those who never cross their legs. Crossing the legs is one of the worst postural habits of man. It throws the hips, spine and head off balance and it’s the most common cause of chronic backaches, headaches and varicose veins.
So is there evidence that crossing your legs, regular style or Indian style when you're sitting affects your health? Assume that a person always crosses their legs when they sit, the male or female way or Indian style way.