The standing lateral raise primarily works the lateral deltoid muscles, which are the muscles found on the sides of the shoulders. Synergists include the middle and lower trapezius and the anterior, or front, deltoid mus... More » Science Human Anatomy Muscles

To do a lateral raise, choose the size of the weights with which you want to exercise, grip the weights with your hands slightly angled and pinkies at the highest point, lift the weights to a 45 degree angle while bendin... More » Health Fitness & Exercise Muscle Toning

According to WebMD, some effective exercises that can improve rounded shoulders include the lateral raise, alternating front raise and prone shoulder extension. Performing these exercises for three sets of 10 repetitions... More » Health Fitness & Exercise Muscle Toning

The quadriceps are a group of four muscles located at the front and sides of the thighs. These muscles originate from the femur bone and run down to the patella or kneecap. More »

Shrugging of the shoulders is primarily accomplished by the upper region of the trapezius muscle. The upper trapezius extends from the shoulder blade up to the back of the neck and is a common target of weight training e... More »

The biceps and triceps muscles are used to bend and extend the arm, while the deltoids are the muscles that lift the arm. When the bicep muscle contracts or flexes, it bends the forearm toward the shoulder. When the tric... More »

Deltoid muscles, situated in the shoulders, are responsible for the majority of arm movements, including arm abduction, arm flexion and medial rotation, and arm extension and lateral rotation. These movements involve the... More »