Hope for the Sedentary: Too Good to be True: The Four-Minute Workout Machine

I work hard at staying fit, but that doesn't mean I enjoy it. Running for half an hour or more five or six days a week is just the price I grudgingly pay in time and discomfort to stay healthy.

So when I heard about a machine that promised a full aerobic and strength-training workout in just four minutes a day, I had to check it out. The device, called the ROM (for Range of Motion) 4-Minute CrossTrainer, is a futuristic-looking contraption with an impressive price tag ($14,615). The manufacturer's website offers a scattering of testimonials (Tom Cruise reportedly owns one)...

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