At what weekly duration of exercise do mortality risk levels off, according to research?

Research indicates that there is a threshold for the amount of exercise that appears to lower mortality risk, after which additional benefits plateau. This threshold is generally accepted to be around 300 minutes of moderate-intensity exercise per week. Engaging in exercise at this level contributes significantly to overall health and longevity.

While it can be tempting to conclude that increasing physical activity beyond this threshold provides even greater benefits, studies show that additional gains in mortality risk reduction do not correspond proportionately with increases in exercise duration. Thus, while more than 300 minutes may provide health improvements in aspects such as fitness or weight management, the direct correlation with reducing mortality risk does not significantly increase beyond that point.

This understanding is supported by various public health guidelines, which emphasize the importance of consistent, moderate-intensity physical activity for maintaining health and reducing the risk of chronic disease.