Stop the sit-ups: A personal trainer says these 4 standing exercises are unmatched at building deep core muscle

These four standing exercises for deep core muscles will work more than just your abs, and focuses on boosting posture, ...

This workout skips sit-ups and crunches: Here's a trainer's 4-move routine for building a stronger core over 50

How to do it: Stand with your back to the wall, feet shoulder-width apart. Place your hands lightly behind your head. Slowly ...
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I ditched planks for zombie sit-ups for a week — here's what happened to my core

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Bored of planks and crunches? Why not try mixing things up with a killer ab ...

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.