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.
Anatomy and Physiology of the Lungs Bronchi gradually form more generations, like a tree branch, and become smaller and smaller. As they spread to the ends of the lungs they eventually form a grape-like structure known as the alveoli. (shown to the right). The diaphragm is the large dome shaped muscle that contracts and relaxes during breathing.