Before the mid 19th century, chair-like toilets had only been used by royalty and the disabled. But with the advent of indoor plumbing in the 1800's, the throne-like water closet was invented to give ordinary people the same "dignity" previously reserved for kings and queens. The plumber and cabinet maker who designed it had no knowledge of human physiology – and sincerely believed that they were improving people's lives.
Squatting is the swiss army knife of movements - in addition to being a full body work out, practicing it rewires the brain to move in a more natural, healthful manner. (More on benefits here.)
If you feel intimidated by the squat, or feel like you have something holding you back NEVER FEAR! This video nicely breaks down a beginning squat step-by-step. (My apologies for the slight shake of the camera.)