Day 7! September Sit-Up Challenge! Have you discovered what works best to challenge your core this month while doing the traditional sit up? Are you using a weight? Band? Medicine Ball? Total Gym, Exercise ball, No Equipment? The key to getting stronger is to make sure the exercise you perform challenges YOU. When an exercise gets easy, rather than adding more reps and time to that exercise - add intensity - especially if you’re limited on time, which most of us are. Intensity is probably the mo

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