http://AskTheTrainer.com/best-ab-exercises.html Personal Trainer Michael Behnken, MS, NASM-CPT-PES, CSCS Twisting toe raises are a progression of the toe raise. They are great for your obliques. To perform properly, make sure your legs remain above your hips. ...

Coach Nicole demonstrates this workout for your core and abs. The only equipment you need is your own body weight, and a mat.