And you need your core muscles all the time in everyday life.

Weak core muscles are common for people with low back pain.

I loved the bending bit, building core muscles and increasing my flexibility.

Improving your fitness level - in particular, strengthening the core muscles - will help.

Just don't forget to keep your core muscles contracted.

Having strong core muscles (we're talking abs here) can help protect your back from injury.

It works the shoulders, the chest, the core muscles and the legs.

Your inner core muscles work mainly to move your body.

Strengthening the core muscles can make you more fit for all kinds of activity.

"The fix is to stretch and strengthen your core muscles."