Bored with your current core-strengthening routine? Here, YogaVibes teacher Justin Michael Williams instructs one of his favorite ab exercises: The Full Body
Hollow Body Holds vs. Crunches: Which is Better for Your Core? – SUPMOGO RecoveryFlex System
Ab Workout: 6 Better Core Exercises for Beginners
Frischman Fitness Abs 101: The Full Body Crunch.
Full Body Crunch
Beware the crunch: Ab exercise alternatives
How to Do a Plank Crunch, a Majorly Effective Core Exercise
YogaVibes
Crunches: Superb Fitness Merits Of This Arduous Abdominal Workout
Abdominal Exercises : How to Do Crunches at Home
How to Do Crunches Safely and Other Exercise Options for Toned Abs
Standing Ab Exercises with Meghan Trainor
YogaVibes