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  1. I did 30 sit-ups a day for a month — here’s what happened

  2. Want a stronger core – skip the sit-ups - Harvard Health

  3. Are Sit-Ups Really That Bad for You? We Asked Trainers - Byrdie

  4. Sit-Ups Benefits: Exercises, Variations, and More - Healthline

  5. Sit-ups Benefits: 9 Reasons You Should Do Sit-ups Every Day

  6. Are Sit-Ups Bad for You? Learn the Pros and Cons | livestrong

  7. How to Do Sit-Ups: Techniques, Benefits, Variations - Verywell Fit

  8. 7 Reasons You Should Do Sit-Ups Every Day - G&G Fitness …

  9. How to Perform a Picture-Perfect Sit-Up for Stronger Abs

  10. Sit Ups – The Benefits, Mistakes to Avoid, and Variations

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