Sit-up exercise instructions and video

The sit-up is a hip-and-waist-flexion exercise that targets your rectus abdominis and synergistically activates several hip and waist muscles.

4 Ways to Do Sit Ups - wikiHow

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Exercise Tutorial - V-Up

Half Sit-up (male) – Video Exercise Guide & Tips Workout guide, Abdominal exercises, Situps workout

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Twisting crunch exercise instructions and video

These smith machine sit-ups will absolutely crush your core! The video has three form tips to help! - @bowmar_nutrition

4 Ways to Do Sit Ups - wikiHow

Exercise Tutorial: Sit-Up

How to Do the Sit-Up

How to Do a V-Sit: Techniques, Benefits, Variations