> The hangover is your body telling you you did something not entirely healthy. You might want to listen to it

Does that also apply to people who drive themselves to the limit in sports? For example many people who do marathons or Iron Man events will feel rough and likely have blisters and bruises for several days. Some people doing sports end up in hospital as a direct result.

Should they listen to the pain of their body and not push themselves?

[I'm saying this as Devil's advocate) to raise a point about your logic, not judging the health issues of hangovers vs exhaustion, blisters, and damaged joints etc]