I did weighted sit-ups every day for a week — here's what happened

What are weighted sit-ups, how do you do weighted sit-ups, and what are the benefits? Read what happened when this writer did them for a week

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What Happens When You Do 50 Sit-ups Every Day for 1 Month

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I Did 100 Sit-Ups Every Day For 30 Days

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5 Lessons From Doing 100 Squats a Day, Press Ups & Sit-Ups

Find Out How Fit You Really Are in Only Three Minutes

100 Sit Ups A Day for 30 Days

How Often You Should Do Ab Exercises for a Stronger Core