
The gluteus maximus is the biggest muscle in the body. If you look at your butt, it forms most of the meat in each cheek and is responsible for hip extension and rotation—aiding you in getting up, standing upright and propelling you forward when you walk, run, jump, and climb.
Weak glutes can cause a plethora of issues including poor posture, lower back problems, and a knock-on impact on the leg joints, if they have to compensate.