While exercises like sit-ups and crunches work the rectus abdominis, or "six-pack" muscles, this simple-looking exercise ...

Here's why crunches are so good for your overall health.

Are you up for a 31-day challenge? Join us on the START Today Facebook group for daily tips and motivation, to connect with others following the plan, and to get real-time advice from trainer ...

I’m suspicious of any workout that promises to deliver results in a short amount of time. I’ve never been one of those people who could hit the gym hard for a week and see a change in my body. Any ...

Do this ab workout two to three times a week to build abs and get a six-pack. This ab workout includes core-strengthening exercises like half sit-ups and side plank dips. It also includes lower ab ...

This workout includes five of her "favorite ab exercises," and it's equipment free, so you can do it at home, at the gym, or while traveling. CrossFit involves many gymnastics-based movements, and as ...

While there are more than enough ab workouts out there to keep your core busy, nothing quite compares to the intensity of ab wheel exercises. When used correctly, an ab wheel can work several muscles ...

Many guys might lazily toss in a set or two of situps at the end of their gym session, thinking that’s enough (probably more in hopes of exposing a six-pack than building strength). We don’t blame you ...

Core exercises can improve strength, posture, and overall health. Although it can be harder for females to attain visible ab muscles, performing core exercises regularly is very beneficial. Sex and ...