- Begin in an elbow plank position with the abs engaged.
- Draw the left knee into the chest. Then step the foot back to the elbow plank position. Now draw the right knee into the chest and then step it back to the elbow plank position.
- This counts as one rep.
- Continue alternating sides and complete as many reps as you can in 30 seconds.
- Roll onto your belly and read on to learn how to stretch your abs with Cobra pose.