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.
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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 ...