5 Ways to Get a Flat Stomach Standing Up
1. Plant your feet shoulder-width apart.
2. Grab a heavy object, like a gallon of water.
3. Tighten your core and lift the object with both hands, keeping your arms straight out in front of you.
4. While keeping your hips stable, slowly move the object to the left, then to the right (that's one rep).
Reps: Three sets of 20
Bonus: When facing forward between twists, do one squat.
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