Side Plank Leg Lift Come into a side elbow plank on the right side with your flexed feet stacked. Rest your top hand on your upper hip or extend it into the air. Keeping your spine lengthened and your abs engaged, lift your left leg up just higher than your top hip. Then slowly lower it back to your bottom leg to complete the rep. Keep going for 45 seconds, switching sides halfway through (at 22 seconds). Take a 15-second rest. Image Source: POPSUGAR Photography