[jmull]

It's nice that practicing willpower improves willpower, even across activities.

But that doesn't suggest that's the best way to do it generally, or that running in particular is an effective or efficient way to do it.

Look, I get it. I run and it takes time so there's pressure to justify it.

But I don't see why the basic truth isn't enough: he enjoys it and it staves off his feelings of impending mortality. (In this case, I suspect he may also be trying to monetize it, but who knows.)