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 ...

It's hard to overstate the importance of your core muscles. They help with posture, balance, and spinal stabilization and they're also used in everyday movements like walking, sitting and lifting.

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 ...