David Kirsch may train celebrities like Jennifer Lopez, Britney Spears, and Heidi Klum, but thanks to the power of the Internet, we like to think he's our trainer, too. Kirsch regularly posts his ...

Some abs exercises can get a little tedious the more you do them, including planks. Thankfully, there are a few ways you can get a good abs pump and continue to develop core muscle without setting up ...

Sample this at-home full-body workout from the Women's Health Build & Burn series, programmed by Obé instructor and ...

Feeling inspired by Livvy Dune’s abs, but don’t quite have the same amount of hours to spend in the gym as her? We’ve good news: you actually don’t need *that* much time to make a difference when it ...

You have to engage your core constantly as you sit straight, stand tall, and walk confidently, which requires a lot of endurance in your midsection muscles. The best way to build ab endurance? A core ...

Runners often forget about the power of the core for performance. This group of muscles—which spans from below your chest through your hips, taking up your entire torso—helps you transfer power ...

While crunches, sit-ups, planks, and other floor-bound movements are effective core-strengthening exercises, standing abdominal workouts offer unique benefits, especially for runners. If you’re ...

Has your core routine gotten stale? I know mine has. While crunches, Russian Twists, and planks are effective, after doing them a bunch, they might get a little, well, boring. Not to mention, there ...

While trendy workouts come and go, Pilates has serious staying power. It's simple, effective, and most importantly, you can take the workout with you wherever you go. If you've never tried Pilates ...