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.
Health Beet on MSN

Three Simple Moves for Building True Core Strength Without Sit-Ups — According to Research

For years, sit-ups were considered the ultimate ab exercise. But modern research shows they’re not the safest or most ...
Yahoo

Ditch sit-ups — strengthen and define your core with 1 dumbbell and this 5-move ab workout

I don't have any real issue with sit-ups, but my tailbone isn't a fan. The good news is you don’t need to do sit-ups to build a strong core. If you're like me and can take or leave sit-ups, there are ...