The abs are composed of primarily type-II or fast-twitch (FT) muscle fibers. That means they're best suited for heavier weight and lower-rep sets rather than excessive numbers with bodyweight alone. The Sicilian crunch is a great exercise to hit them.
This exercise really taps into those FT fibers under load. During this movement, the lower body is secured as the upper body moves.
related posts
Train your maximus, but don't forget about your medius. Hit the upper glutes hard with this unique exercise variation.
These brand new exercises will hit your lats, strengthen your shoulder girdle, and give you a great set of abs.
After one of our boot camp workouts, Coach Thibaudeau talked about several ways to progress in training.
When designing your workout plan, break your body into four quadrants. Here's why.