Unlocking Immortality: The Couzens Quotient

The Couzens Immortality Quotient suggests that adding an hour of training per month can offset the amount of aerobic fitness lost by getting a year older. Research shows that only half of the fitness losses suffered by endurance athletes as they age are due to the passage of time, while the other half can be attributed to reduced training. The key to long-term fitness is to keep moving, even with low-intensity exercise, and not to skip workouts.