Today on my run I encountered a roadie whom I'd seen from a distance several times before.

He's maybe a little older than I, always riding alone, has the look of someone who knows what he's doing on a road bike (decent cadence, sensible lane position and road choice, reasonably fitting bike and clothes), but he has a pretty big belly, like he'd maybe been off the bike for a while for whatever reason, and is getting back into it now.

Today it's very hot and windy, and I saw him up close at an intersection.

He had a cannula in his nose and a little portable oxygen concentrator in his jersey pocket.

If that guy isn't tough, I don't know who is.