The Futility of the Workout-Sit Cycle [TheAtlantic.com]
In April, the AARP asked me to help moderate an international meeting of 15 exercise scientists in Vancouver. Their goal was to write a consensus statement about how best to use exercise to promote health (specifically “brain health”). What types of exercise are ideal? Is walking as good as running? Does yoga count? How do we measure exercise—as a matter of heart rate, calories burned, or simply of time spent? All or none, of these? I was blunt about my skepticism. These are huge questions.