If you've ever been to a gym, you've received fitness advice, whether you wanted it or not. Do cardio before you lift weights. Or wait, do your lifting before you get on the treadmill. The elliptical machine is the best cardio machine, unless you think the treadmill is. Running will either ruin your knees or make your joints stronger. How do we know which advice is sound and which we should ignore?
Journalist Alex Hutchinson investigates the science behind the convention wisdom on fitness and exercise in his book Which Comes First, Cardio or Weights? He answered some questions for us about what surprised him when researching his book and how what he learned writing it changed his workouts.
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