This article is going to show how u can do weight watchers for free, but first off, lets see why weight watchers is so successful. The 4 pillars of success; Food, exercise, behavior & support.
1 Hip muscles. Lunges work all of the gluteal muscles in the hips, primarily the gluteus maximus that is used to extend your hips. Taking large steps during a lunge can further engage this muscle. The gluteus minimus and gluteus medius are also used to stabilize your body throughout the lunge.  Thigh muscles.
The side lunge targets the muscle on the outside of the hips, the glutes, and tones the inner thighs, too. Form: From a wide stance, bend one knee. Keep the shinbone under that knee straight up from the floor. If the knee falls inside the foot, use a shorter stance.