This 9-minute ab workout uses one piece of equipment to build a stronger, more functional core

Carve out just nine minutes a day, five to six times a week, and watch how your core transforms.

Target Deep Core Muscles and Hard-to-Hit Obliques With This Standing Ab Workout

Naturally, your go-to core workout might include a variation of sit-ups, crunches, and planks. Because as a runner, you know ...

This 20-Minute Core Workout Will Help You Build Functional Core Strength and Muscle

Fast, effective, and no basic movements.
Yahoo

Forget sit-ups — this 10-minute standing ab workout is great for your core strength and posture

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images While ...

If You’re Not Training Your Core Like This, You Might Be Missing Out on Serious Strength Gains

Psst: it's not another plank.
AOL

6 medicine ball exercises you should try, according to a personal trainer

I'll admit it: For years, I avoided adding a medicine ball to my workouts. Frankly, I was intimidated by the large weighted ball, imagining it was meant solely for hard-core exercisers with 18-inch ...