So grab your medicine ball, and let's get going ... especially your lower back, certainly your butt. It's a really great core exercise. 15 more seconds, then we're all done.

Here are five effective workouts to boost your core rotational strength. Russian twists are a popular oblique-targeting ...

Build strength, improve performance, and get ripped using these eight functional core exercises that you can tack on to any ...

There’s a reason we think it’s a good idea to practise ab exercises and ab workouts ... Lower your leg down to each side then back up without touching the floor. Standing up with your knees slightly ...

Tip: Hold a dumbbell or medicine ball for extra intensity ... This means incorporating back-strengthening exercises as well.