A precedent study showed that 1hr of sports increased your life by 8hrs. 1hr very intensive sports increases it by 16hrs, 1hr of walking increases it by 2-4hrs. The study concluded on the fact that it probably only works up to 7-10hrs per week, as that&#x27;s the level which makes injury more probable. They say &quot;probably&quot; because injury doesn&#x27;t shorten the lifespan, it only makes in uncomfortable. Which is probably what you want: Longest comfortable life, followed by rapid descent.