Recently, while sifting through some of the excruciatingly detailed performance data he’d collected over decades as a Colorado-based triathlon coach, Alan Couzens noticed a pleasing symmetry. All else being equal, the amount of aerobic fitness his athletes lost by getting a year older was almost identical to the amount they gained by adding an hour per month of training time. Want to freeze the biological clock from one birthday to the next? Find a spare 15 minutes per week and fill it with running.
The long-haul practicality of this approach is debatable: after a decade, that additional training time would total 2.5 hours a week. But the underlying premise of what we might call the Couzens Immortality Quotient taps into a fertile area of debate. How much of the aging process is an inevitable slide into decrepitude, and how much is a result of not getting enough exercise?
That’s the question Johannes Burtscher of the University of Lausanne, along with colleagues in Switzerland and Austria, posed recently in the International Journal of Environmental Research and Public Health. By pooling the results of more than a…
