Muscles Used: Obliques, Shoulders
Movement: Position your body on the ground on your side. Place your top foot forward and your bottom foot backwards. Support your weight on your bottom arm, which should be bent with your elbow to hand on the floor. Tighten your abs and raise your hip and side off the floor. Your hip should be high enough that from your feet to head make a straight, angled line. Do not allow your glutes to stick backwards or your shoulder to drop forward. Hold this position for as long as possible.