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Sit-ups vs. crunches: Which exercise builds stronger abs?

• Sit-ups target your abdominal muscles, back muscles, and hip flexors, while crunches only target your abdominal muscles. • Neither sit-ups nor crunches alone burn abdominal fat. Overall activity and ...
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Decline Crunches vs. Decline Sit-Ups: Do They Work the Same Muscles?

Your abdominal muscles are resistant to fatigue, according to the IDEA Health & Fitness Association, a membership organization for fitness and wellness professionals. As part of your core muscles the ...

If You Can Do This Many Sit-Ups After 60, Your Leg Strength Is Stronger Than 90% of Peers

Try the sit-up test after 60: a CSCS trainer says 25 or more clean reps puts your core endurance in a standout range.
Men's Health

Build Thicker, More Muscular Abs with This CrossFit-Inspired Sit-Up Hack

Say what you like about CrossFit, but the athletes at the top of the sport are in phenomenal shape. Engines that can go all day, strength, flexibility and abs that pop: they have it all. The latter is ...
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. ...