How Often Should I Do HIIT to Lose Weight?
How Often Should You Do HIIT to Lose Weight? (It's Not as Many Days as You May Think!)
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If running isn't helping you lose weight, do this 30-minute HIIT workout instead.
Equipment needed: medium to heavy dumbbells (10- to 20-pounders), and a kettlebell if you have it (or you can use one dumbbell)