The animation here is just showing the muscles in the thigh, leg, and hip that are involved in walking. Obviously walking is a whole-body movement and plenty of other muscles are active, but this video isn’t showing every single one. It’s just highlighting what’s happening in this region. I’m sure some people will want to chip in and say there are more muscles involved – yes, there are, but this video is focused on what you see here. | Bradley Blair Osteopath