Circuit 2, Exercise 2: Elbow Plank and Reach Begin in an elbow plank with your feet slightly wider than your hips to create more stability. Reach your right arm straight out, with the thumb pointed toward the ceiling. Return back to elbow plank, and reach your left arm out. This completes one rep. Continue alternating for 40 seconds, then take 20 seconds of rest. Complete circuit two for a total of three rounds. Image Source: POPSUGAR Studios