When you flex your muscles you are contracting them. When your muscle fibers gain tension through Actin and Myosin crossbridge cycling they may shorten due to the tension. This is called muscle contraction
Diets in high in non-starchy vegetables, such as broccoli, spinach, and beans, may help protect against stomach and esophageal cancer. Eating oranges, berries, peas, bell peppers, dark leafy greens and other foods in high vitamin C may also protect against esophageal cancer.
The answer is C- It’s harder for tobacco companies to attract new smokers without advertising.
<h2>Muscles in legs </h2>
There are three muscles in the human legs. The hamstrings are three muscles which are located at the back of the thigh that affect knee and hip movement. They start under the gluteus maximus behind the hip bone and then attach to the tibia bone at the knee. These are biceps femoris which is the long muscle in the body that flexes the knee.
