YOUR CORE TRAINING routine needs to evolve beyond bodyweight. Whether your goal is to train for aesthetics or performance (hopefully, you'll be concerned about both), you'll only get so far by running ...

To do a plank, engage your core and keep a straight line from your head to your heels. Planks strengthen your core, improve balance, and help burn calories. Speak with a healthcare provider before ...

Try this flip flop abs workout, which will light every muscle in your core (including the back!) on full-blown fire. Just you wait. “Your core is 360 degrees—not just the front of your stomach,” says ...