You'll never do crunches again after spending 10 minutes with these three kettlebell ab exercises
You’ll never do crunches again when you grab one of the best kettlebells for weightlifting and enter the hurt locker with ...
Forget 'basic' crunches — here's 3 ab exercises you need to try, according to a functional training coach
Build strong core muscles without weights, just using these three crunch variations from a functional training coach.