In his article Don't Just Sit There, Daniel Lametti explains why squatting is a much better way than sitting when it comes to doing your number 2.

Shortly before Christmas in 1978, the leader of the free world came down with a severe case of hemorrhoids. The pain was so bad that President Carter had to take a day off from work. A few weeks later, Time Magazine asked a proctologist named Michael Freilich to explain the president's ailment. "We were not meant to sit on toilets," he said, "we were meant to squat in the field." He's probably right.