Forget crunches, sit-ups, or Russian twists — these 6 Pilates-inspired exercises strengthen your core without weights

You don't need a reformer to benefit from a Pilates workout; just try these six bodyweight exercises for core strength.
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I did 70 cycling Russian twists every day for a week — here's what happened to my body

My fitness goals and habits change pretty regularly but no matter what my next goal is, having a strong core will make things easier. If I want to lift heavier in the gym this year, a strong core will ...