And I'm sure Michael Phelps couldn't deliver mail as well as those postmen. Leaving aside the obvious physical differences between working as a cop and olympics training, what point are you making exactly?

They are working 8 hours a day, not training 8 hours a day.

There's one Belgium (IIRC) football team member in the world cup who, before going pro, worked as a mailman. His comment about that is that people don't realise how hard mailmen have to work. I suspect his life at the top of the most competetive sport is much easier.