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Before you pay — who this is not for

A guide that is wrong for you does not fail gently. If any of these is you, close this page — that is the right outcome and it costs you nothing.

• Anyone with an eating disorder, or a history of one — including exercise as compensation
• Pregnancy, or any postpartum period without clearance
• An existing injury, uncontrolled hypertension, or any condition where a Valsalva under load is contraindicated
• Anyone who wants a calorie burn figure — it is the wrong metric for what this does

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