THE GIST: Ten bootcamp-style workout DVDs. And you won't need a home gym - this cardio-focused programme promises to transform you into a lean machine in just 60 days, at home, without any equipment.

Do a squat jump. Now do as many as you can in a minute. Now do that same thing again, but for burpees, high knees, and a lot of other (honestly kinda painful) exercise moves. It's insanity. No ...