Running may seem like a total lower-body activity ... Then repeat on opposite side. Why it works: This exercise can power your arm swing by strengthening the shoulder and upper-back muscles ...

where you place emphasis on one side of the body at a time, is the most effective way to promote symmetry with exercise. By doing unilateral single-leg or single-arm exercises, you can ensure that ...

The obliques, which you might have heard being called "side abs ... This single-arm variation adds an element of anti-rotation, leaning on your obliques to keep your torso upright and balanced.

But Utthita Parsvakonasana (Extended Side Angle ... foot and reach the other arm behind your back and bending your elbow. The position of the top arm encourages your chest and top shoulder ...

Make sure your pelvis is tucked under your torso. Extend one arm ... your swing to be short and narrow, resulting in thin and fat shots and/or slices. To improve mobility, lie on your side ...

and one-arm presses. "Unilateral refers to movements performed independently by one side, and in the fitness space, this contrasts with bilateral exercises, which is when both sides of the body ...

When we think of core exercises, standard moves like situps and crunches are often a go-to. But working the side body is an important piece of a well-rounded core routine that is sometimes overlooked.

While running may seem like a total lower body activity ... Repeat on opposite side. Berdan notes that this exercise can power your arm swing by strengthening the shoulder and upper back muscles ...