WellPhy Pain & Sports Clinic - Sit-ups or Curl ups are powerful, dynamic exercises for your abdominals and hip flexors. With the correct form, these are fun and safe exercises to add

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Sit-ups and Back Health: Why Science Suggests Other Exercises Instead - Strength Resurgence

Exercises - Performance Health Academy

The Benefits of Curl Ups (with Video) - SportsRec

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The Ultimate Guide to Getting Out of Hip Pain and Back to Squatting, Deadlifting and Olympic Lifts - Fitness Pain Free

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The Big Three: Athletic Trainer Michael Sole with Exercises to Build Your Core