Today really brought home the observation that "this getting old stuff is really getting old". Riding today would have been my 5th straight day without a rest day (DOB 1949). Yesterday was an absolute slog with no energy and I cut short the last 15 or so minutes of the ride simply because I was tired. It was not that hot and the ride was not that long. And those previous 4 days were not that hard. Today I took a rest day even though this coming Friday (today being Wednesday) will be a 'forced rest day'.
Five or so years ago I did not think twice about 10 to 12 (or even 14) straight days of similar rides (effort and duration). Like I said, this getting old stuff is getting old.
dave