Rage Against the Machines

This "no-nonsense look at the often nonsensical world of fitness clubs" warns people about depending on machines for our workouts. It turns out, for example, that a leg-extension machine trains you to do one thing: "become very strong at the leg-extension machine." Some common-sense points, for sure. Ninety percent of the people I see working with personal trainers at the fitness club would be better off just walking around their neighborhood for an hour each day.