While catching up on my reading on the flight to Dallas I came across an article in the New York Times written by our old friend Gina Kolata. I read the piece and couldn’t believe it: I guess on occasion Gina has an outbreak of good sense. At least such appears the case with her discussion of calories and exercise.

She starts by describing a scenario I’ve witnessed myself all too often.

The Spinning class at our local gym was winding down. People were wiping off their bikes, gathering their towels and water bottles, and walking out the door when a woman shouted to the instructor, “How many calories did we burn?”

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