How to do it: Stand with your back to the wall, feet shoulder-width apart. Place your hands lightly behind your head. Slowly ...
No, not sit-ups — use this 5-move workout instead to strengthen your core and improve your posture
When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Sit-up haters, we've got a sit-up free workout ready and waiting for you to ...
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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