Two stories about opposite ends of the spectrum:
From 1973 through 1977, I'd trained very steadily.
Not every day, but 5 or 6 days a week, many times all 7.
Did anywhere from 3 or 4 miles a day to 20 or more!!
In December of 1977, I ran a 40 mile race over two mountains in my fastest time. (I'd run the same race 3 years earlier.)
Then, for some reason, I practically stopped running for about 3 months, my highest mileage being about 30 miles in a week!!
But, wanting to run the Avenue of the Giants marathon that May (of 1978), I BEGAN heavy training in April!!!
My first week "back", I did 39 miles.
Second week, I did my only 100+ mile week EVER (101.6 miles!!).
My third week ended with 62 miles, INCLUDING the marathon!!
Fastest EVER, and only sub-3:00, time of 2:56:02!!
Second story concerns Chuck Smead.
Anybody remember him??
He was a national class runner in the 70's, with a 6 mile of around 28 minutes, and a marathon best of around 2:13.
He was FANATICAL about not missing a day of training!!
He'd run EVERY day for several years!!
So one day (I heard this story from someone who knew him well.....I knew him too, but not closely.), sick as a dog, with the flu and a 102 degree temperature, he had not yet run that day, and it was after 11 p.m.!!!
So his housemate woke him up out of a stupor,and told him what time it was.
Chuck, 102 degree temp and all, somehow got his shorts and shirt on, got his shoes on, dragged himself out the door, jogged (about 8 or 9 minute mile pace!!) a half mile down the street, then a half mile back, crawled in the door, and passed out!!
BUT...his consecutive day streak continued!!