Our core is made up of four muscle groups that are essential to everyday movements, like walking and lifting. And when people think about core strengthening, crunches are often the first thing that ...

Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • ...

The benefits of reverse crunches, plus how to make them easier and harder. Walk into any workout class with ab-toning in the description and it’s a safe bet that you’re about to do at least a few ...

Welcome to Start TODAY. Sign up for our free Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! Many people don’t use correct form when doing core ...

When you hear "ab workout," your mind probably goes to sit-ups and crunches, lying on your back. Yet research shows that these aren’t actually the best exercises for targeting the muscles in your ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. Follow Gabby Landsverk Every time Gabby publishes a story, you’ll get an alert straight to your inbox!

Still doing sit-ups for a flat stomach? Science says stop. Discover the 'internal corset' exercise that tightens your waist and protects your back—no crunches required." ...