9-Minute Flat Belly Workout: Shrink Your Waist Fast

4. Plank

Start in a forearm or high plank position. Keep your body straight—avoid sagging or arching. Hold for 30 seconds; repeat 2–3 times. Experiment with variations: standard plank, elbow plank, and side plank. Each session should last at least 2 minutes. Do not attempt if you’ve had recent surgery, tendon injuries, organ inflammation, or cardiovascular problems.

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