It is about how to represent power and strength, which can’t be seen.

Stop

A action or a movement is suddenly stoped, means something really heavy stops its move. Hand would stop immediantly, the arms, body and head could continue moving a small distance because of follow through, then stop.

Barycenter

When pushing, person’s barycenter will be on the object been pushed.

Shake

When someone is push or act hard, the body will be unstable and cause shaking.

Curve

Curve is a shape of accumulated power. When someone push hard his back should in curves because straight back can’t push, just depend.

Sliding foot

Energy on the wall will turn back and push person back to opposite direction when pushing hard. The surpporting foot goes back by slightly sliding on the ground.

Reference!