[kd5bjo]

> There are diminishing returns but they don't really kick in until you're already pretty fit, they are only really a concern that athletes need to think about.

Unfortunately, it's people at both ends of the fitness curve that have to be careful about increased exercise frequency/intensity. On the less-fit side, the primary concern is accumulating minor injuries that reduce capacity for exercise even further leading into a downward spiral.

[kelipso]

Too much exercise is a problem that can happen to literally anyone. Not just due to injuries. Fatigue management is one main component.

Saying that more exercise is always better is a completely false statement. Do not care if it sounds good or is meant to "help" people or whatever, it's completely false and can harm uninformed people.

[browningstreet]

This guy looked at longevity stats for runners. He recommends running a little, not a lot.

2012 TEDx Talk: https://www.youtube.com/watch?v=Y6U728AZnV0

[_xiaz]

Thats why we recommend obese people to walk first, even if they think they would enjoy running.