Ultimate Plank Fitness features step-by-step instructions for 100 different variations of planks that can be used to customize a workout.

Forget crunches! Build your strongest core ever with 100 Planks! It includes 100 of my all-time favorite plank variations with lots of tips for beginners, corre

Charlie Bronson has spent three decades in solitary confinement, and yet has stayed as fit as a fiddle, gaining several world strength and fitness records in th

Core training (aka strengthening and sculpting the body's midsection with a variety of exercises including everything from Pilates to situp-style crunches) is r

The breakthrough diet and fitness system that sheds pounds and reshapes your body--fast!