Core Workout

Spice up your planking with these variations.

This bodyweight-only HIIT routine packs a big punch in minimal time.

Tighten your abs and strengthen your lower back in two easy steps a day — along with a four-move routine you can complete anywhere with nothing more than a dumbbell and a pillow.

This full-body dumbbell-only workout is fast and furious.

Master these ab-strengthening moves for a strong, solid core.

Are your workouts too cluttered? Wipe the slate clean with a simple, no-frills, straightforward abdominal routine designed for results that are anything but basic.

What you need to do to work up to the ab wheel.

These single-leg poses and twists activate your abdominal muscles to improve your posture and reduce lower back pain.

This high-intensity ab circuit will make you feel the burn even in the cold!

Two’s company! Double up on your results and have some fun in the process with this partner-assisted core routine.

It may not be easy, but it sure is effective — learn how to get the most out of an ab wheel, then dig into these two beginner and intermediate workouts.

Janelle pushes it to the max with this cardio core circuit.

Grab a dumbbell or plate and try this four-piece core routine!

Get your abs into fighting shape with this high-impact kettlebell routine, courtesy of Miami-based trainer Jacqueline Kasen.

This bodyweight-only HIIT routine packs a big punch in minimal time.

Have you ever wanted to hike Mount Everest but aren’t down with altitude sickness and frostbite? Here’s your chance.

You're halfway through this core-sculpting Fitness Quest, so don't slow down now!

If you dread V-ins, we don't blame you. But over the course of this 30-day challenge, you'll learn to love them.

Strengthen, sculpt and burn all at once with this ab-and-cardio combo workout.

Get a sleek, strong core without crunches with this vertical ab workout.

This circuit workout will shock your core and get you out of your comfort zone!