How we test health, fitness, and outdoors products at Insider Reviews

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Rick Stella/Insider

From oral care and nutritional supplements to running shoes, workout apparel, and electric bikes, Insider Reviews tests and reviews all manner of health, fitness, and outdoors products. For close to five years, the team has tested hundreds of products, including items like electric toothbrushes, sex toys, thermometers, glucometers, fitness trackers, massage guns, and teeth whiteners.