Well, I would start at the very beginning ...
Starting plan = getting everything firing properly again.
1. Prone TA activation: lie on your stomach and pull your belly button in toward your spine like you are trying to zip up tight pants. Work your way up to 30 second holds (make sure you are BREATHING). Progress to quadruped (on all fours) and then standing. Start with 5 reps total.
2. Rectus activation: lie on your back, extend your arms down by your sides, and keeping your neck neutral, slowly lift your head up off the ground. You can put your fingers on the rectus to feel the activation if you want. Progress to phase one curl ups (arms extended toward knees), then phase two (arms crossed over chest). Repeat for 2 sets of 10.
3. Beginner planks: find an elevated surface that is about hip height (if you have a Smith machine, this is a good use of it). Place your hands on it about shoulder width apart and keep your body straight, like you are going to do a pushup. Hold for as long as you can, working up to one minute. When you hit one minute, find a lower surface. When you get down to the ground, you can drop to your elbows, and work up to 2 minute holds. Repeat for 3 "sets".
Hope that helps!
