Forget endless sit-ups and crunches — this trainer's 5-move resistance band routine will fire up your core and build real strength at home

Work your core muscles, improve your posture and boost your stability with this five-move resistance band routine from ...

If You Can Do This Many Sit-Ups After 55, Your Core Beats Most People Your Age

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time.
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No, not sit-ups — try the runner's plank to strengthen your abs without hurting your lower back

Hundreds of sit-ups aren’t the key to building a strong and injury-resistant core. Yes, this abs exercise is great at strengthening just that — your abs — but in the abs vs core muscles debate, it’s ...