Perform the crunch: slowly curl your upper torso until your shoulders leave the floor. NOTES: Don't sit up completely. Just curl up enough to lift your shoulders 4-6 inches off the floor. The Finish ...
You don't need to do thousands of sit-ups or spend hours in the gym to build abs. You can instead do the bare minimum of two to three ab-focused exercises for 20 to 30 minutes a week. Exercises like ...
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