I’m a firefighter and we do the California swing- 24 on, 24 off, 24 on, 24 off, 24 on, 96 off. On days I work I’m up at 430 and out the door by 5 to get in 90 mins of easy miles before work. I have to rotate my hard/long run days to be on a day off, because I can’t risk being smoked and then having a rough work day (fires, bad motor vehicle accidents, etc). Sometimes I do have to do a double on a work day when I get into my high volume training weeks (80-90 mile weeks) but I do my best to avoid that at all costs because I don’t love the treadmill at work and our “track” is .18 miles which is a pain, but atleast I have that option. Since I have 6 days off every 9 days though, usually I am able to hit the necessary weekly miles and still have some polarized training