Build strong core muscles without weights, just using these three crunch variations from a functional training coach.

For the best experience, please enable JavaScript in your browser settings. The basic crunch is an excellent abdominal strength training exercise to work your upper ...

You can tone and strengthen your stomach muscles with ab exercises that go beyond the basic crunch. (Photo Credit: E+/Getty Images) Excess belly fat is linked to certain health risks, including ...

Of all the abdominal exercises, the basic crunch is one of the most effective. The key is to keep the movement slow and to focus on good technique. Lie on your back with your knees bent ...

Bicycle crunches are a great exercise for building core strength in runners – and they are a fair bit harder than they look. Now, we don’t have to remind you of the importance of doing ...