This 30-Day Plank Challenge Will Transform Your Body

A strong core is the foundation to a strong body. Think about it: A tree would fall if its trunk wasn't solid and stable. Doing core work isn't just about your middle, either. Having a strong core will make you a better runner, surfer, or yogi (or whatever activity you like to do) while improving your posture and balance. Working your core can also protect you from low back pain — and yes, it’ll tone your abs, too.

-- This feed and its contents are the property of The Huffington Post, and use is subject to our terms. It may be used for personal consumption, but may not be distributed on a website.