I swapped sit-ups for this abs exercise, and it's made a huge difference

The three-legged plank to tiger curl strengthens your core, hips and shoulders.

Stop doing 100s of sit-ups! Build strong, stable abs with McGill curl-ups

The modified McGill curl-up is a Pilates go-to for ultimate core control and strength.
PopSugar

How to Do Sit-Ups Safely Plus Alternatives to Try, According to Experts

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...

Logan Paul Says This Simple Daily Routine of Push-Ups, Sit-Ups and Running Sparked His Body Transformation

The WWE star says a simple daily routine helped spark a more serious approach to lifting, recovery and consistency ...
Tom's Guide

Less sit-ups, more compound exercises — this one exercise sculpts and strengthens your abs and obliques

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Women's Health

Sit-ups vs crunches: The core exercise that actually builds stronger abs

If you’re a little hazy on the difference between sit-ups vs. crunches, you’re not alone. They both strengthen your core, but the details on how they differ and the benefits of each can be confusing. ...