The penguin of the core exercises. Get ready to waddle!
Start lying on your back in sit-up position. Using your core to lift your back or the ground, extend your arms straight down towards your feet. Crunch sideways, reaching your hand down to your foot. The return to the starting point and repeat on the other side. Use your breathing to keep your core tight as your go from side to side, exhale to reset.
The more reps you do of the exercise, the more you run the risk of straining you neck. Focus on controlled, concise movements and reset when necessary. Short bouts are better than poor form.
Up next Day 13: V-ups! Feel free to comment with any questions or concerns or email me at firstname.lastname@example.org