Looking for a quick ab workout to fire up your core? This seven-minute intense ab challenge targets your lower abs with no equipment. To find out for myself, I unrolled my yoga mat and gave it a go ...

Say the phrase “core muscles” and most people’s minds shoot to an image of a six-pack. But these six-pack muscles – the rectus abdominis – make up just a small portion of the core musculature, and ...

Add Yahoo as a preferred source to see more of our stories on Google. Man holding a side plank outside. It's hard to overstate the importance of your core muscles. They help with posture, balance, and ...