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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day.

Time for a quick core blast? We've got you covered with a routine that only takes 10 minutes to complete. If you want to add some of the best adjustable dumbbells into this routine, the option is ...

No offense to sit-ups, planks, and hollow holds, but basic core exercises can feel drab day after day. They work the abdominals, but if you’re looking for stronger, sculpted abs, let me introduce you ...

If you have 10 minutes to spare and a couple of dumbbells to hand, then this quick core workout from fitness trainer Kat ...

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 ...

As a runner, you don’t want to neglect core strength. These key midsection muscles provide the stabilization and upright posture you need to run efficiently and injury-free. And you can really turn up ...

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 ...

The holidays are for relaxing and indulging, but sometimes you just need an excuse to escape upstairs and do some ...

For beginners, it's important to start slow with the standing windmill exercise. Focus on mastering the form before ...

Denise Austin shared an exercise to target “menopausal belly.” The 67-year-old demonstrated a standing core exercise to tone the abs. She explained that the “quick” move helps with “ab strength, back ...

Time is a precious commodity, and sometimes, finding time to squeeze in physical activity, like a 30-minute HIIT workout, or a group fitness class can be challenging. However, coach Raneir Pollard has ...