AbMat Sit-Ups (Diamond Sit-Up), I'm Not Going to My CrossFit Gym — Here's the Simple 2-Week Workout Plan I'm Doing at Home

Lie on your back, and open your legs into a diamond shape (aka butterfly legs) with the soles of your feet pressed together and knees out wide. Extend your

Diamond Sit Ups

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The AbMat Sit-up

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Basic AbMat Sit-Up Variations

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