Execution:
1
Lie on your side, place your forearm on the floor (elbow under shoulder) and keep one knee bent with the bottom leg on the floor.
2
Lift your hips while keeping the body aligned from hips to head.
3
Hold the position with a braced core.
Tip: this is a great beginner progression — once you can hold 30s per side, move on to the full side plank.