This advanced ab workout is designed to increase the size of your abdominal muscles to make them more defined. Build Muscle. Workout 1 – Abdominals.
Holland says: â€œThe plank is pretty much one of the only exercises where you're getting your entire core. You're working the front and back of your abdominal .
Completing 8 weeks of The 6-Pack Ab 5-Day Exercise Program will. Your next step is to tone your body while you build muscle in your core. To do. 1. Day 1: Perform 30 minutes of rowing, 25 side crunches, and 15 upward-facing hip flexes