#218 - AMA #38: Can you exercise too much?

Exercise serves as the most potent tool for longevity, significantly reducing mortality risk across chronic conditions including cardiovascular disease, cancer, and type 2 diabetes. The optimal dose of exercise remains a subject of debate, particularly concerning the "J-curve" hypothesis, which suggests that while moderate activity decreases all-cause mortality, excessive volumes may paradoxically increase health risks. To navigate conflicting research, metabolic equivalents (METs) provide a necessary framework for quantifying exercise intensity and volume, moving beyond simplistic duration metrics. By normalizing work across various activities—from walking to high-intensity training—METs allow for a precise analysis of how different exertion levels impact healthspan. Identifying the upper limits of beneficial exercise is essential for those seeking to maximize longevity, shifting the focus away from the minimum effective dose required for basic health maintenance.