What Muscles Do Sit-Ups and Crunches Work?. Nike UK

Ab exercises like crunches and sit-ups target similar muscles. Learn more about abdominal anatomy and ways you can target different muscles.

V-up exercise instructions and video

How to Do Crunches Properly. Nike ZA

The Best 4 Crunches For A Solid Six Pack - Muscle & Fitness

Six Exercises to Boost Core Muscles Beyond Your Abs - WSJ

What Muscles Do Sit-Ups and Crunches Work?. Nike UK

I just tried JLo's ab workout for a week — here's what happened

Kendall Jenner Swears By This 11-Minute Ab Workout, and You Might, Too

Standing Core Exercises

The men's midlife workout guide: get fit at home

Fitness Zone, Vitality Fitness Partners

You don't need crunches to build a stronger core — just 10 minutes

How to Do Crunches Correctly — Plus 14 Variations