Crunches have long been the go-to exercise for a post-workout ab finisher. Not only are they simple to execute, but you can't deny the burn that comes after just a few reps. Still, as fatigue sets in, ...

Build the “go” muscles for longevity instead of just the “show” muscles for aesthetics. Crunches target superficial abs but may strain the lower back with improper form. Supine toe taps strengthen ...