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.
Fit&Well on MSN
Forget sit-ups—a Pilates instructor says this move is more effective for your deep core
A lot of people avoid doing sit-ups because they don’t feel like they have enough core strength to do the move without ...
Strengthen your abs and obliques with this 12-minute core circuit that you can do anywhere without any equipment bar a yoga mat.
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