Side Plank
Lie on your side, say, left.

Raise yourself on the (left) forearm. Your shoulder should be directly above the elbow.

Keep your shoulders, hips, and knees in alignment.

Rest your other (right) arm along the side of the body.

Hold the pose for a few seconds, then come back to starting position.

Next, turn over to your other (right) side.

Repeat the exercise on your right side.

Do the routine 10 times for each side.
Benefits: Improves balance and strengthens muscles along the sides.