Video: Side Plank
Side plank is one of my favorite core exercises! It engages everything in your abdominal structure, but unlike many abs exercises, it is really quite difficult to engage, and potentially strain your lower back. You should NEVER feel a lot of pressure in your lower back when you are performing any abdominal exercise. If you do, it means you are either not using the proper muscles to complete the exercise or you have used the proper muscles to the point of fatigue or failure and your lower back is trying to be nice and help you out. This is a trick! You will not feel like your lower back helped you when you are in pain later! Be careful and start out with 20-30 seconds on each side, eventually building up to 60 seconds or more.