There are two different styles of toilets in Japan called squat toilets and Western-style toilets. The squat toilets are the oldest of the two, and waste is collected in a shallow trough. The Western-style toilet is the standard flush toilet used in worldwide.

the different kinds of toilets are the flush toilet, urinals, squat toilet, pit toilet and the incinerating toilet

Because people stand with the western ones.

Without toilets, humans would need to squat to have a bowel movement. Women would need to squat to urinate, and would risk getting urine on the inner thighs, legs, and feet. Besides the comfort of sitting, toilets also allow for privacy (versus going behind a bush). Further, toilets take waste away in a simple flushing mechanism, which helps prevent illness and disease from being transferred to other people.

Body weight squat, goblet squat, zombie squat, front squat, and back squat