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Isn't it the same with exercise, though?

> Those who you see exercising are likely quite healthy and thus _able_ to exercise to old age (or won a genetic lottery to be able to withstand a lot of exercising).

> What you need to count is how many people try to exercise, and then the % of them dying earlier than those who don't

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It's not exactly the same, because there's actually studies that tries to answer this exact question - https://youtu.be/-3dt7rpvz4g?t=294

TLDW; the curve of risk/mortality vs amount of exercise is a u-shaped curve, which means if you _don't_ exercise, you also die earlier, and if exercised _too much_ , you also die earlier.

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