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 bronchi and pulmonary vessels, which extend from the trachea and heart, respectively, collectively form the root of the lung. The part of the medial surface where these structures enter the lung is known as the hilus (figs. 22-4 and 22-5). The apex is rounded and fills the cupola of the pleura.