Count the Exercise Cost of Calories

A bottle of sugary (non-diet) soda contains about 250 calories. That’s a lot. Reminding yourself of this fact can give you the extra motivation to pass up the soda and go for a drink of water instead. Researchers at the Johns Hopkins Bloomberg School of Public Health think they have found an even better motivation: exercise cost.

To test their theory, they created a sign with the words “Did you know that working off a bottle of soda or fruit juice takes about 50 minutes of running” and posted...