It is exercise by cycling（Buttocks）

Please go on a flat way.

Please pedal a bicycle with I turn to the front and stand on a

pedal with both legs, and having lifted the hips from a saddle.

When I twist a waist, and the right foot became the left below

when the left leg became it below, I turn a waist to the right.

The upper part of a person's body please turn to the front by

all means.