The difference between 8 and 9 hour days is negligible, in my experience. I typically do four 10-hour days here in the US, leaving me a fifth day that either st

The difference between 8 and 9 hour days is negligible, in my experience. I typically do four 10-hour days here in the US, leaving me a fifth day that either stays free on my schedule, or is open for 100% overtime pay if there is extra work at my job. When I started, I was on five 8-hour days with the possibility of working half days on Saturday if things were hectic. It made me extremely prone to burnout because I never got enough time to reset. Depending on the demands of one's job, the four 9/10-hour days may work or may not. For me, working 8 hours then commuting home meant I was going to spend what remained of my weekday evenings decompressing, getting nothing done at home or with my hobbies because I was drained from the day. Switching to 9, then 10's made zero difference on those wasted days, but granted me 1.5 extra days (free day + no more possible half-day Saturdays) where I typically can do whatever I want. I am lucky enough to be able to drop that free day on Friday or Monday, so I get tons of three day weekends to spend with my wife and various hobbies. If you focus on the hours per day, it stops making as much sense for some. I find folly in that. I look at days per week. If I am working 5 days per week, because of burnout, those five days are no longer mine. Not much else is getting done. If I am only working 4 days, still moving the same output with the same paycheck, but I'm getting more of my time per week back, which allows me to reset and enjoy the things I enjoy. Again, this won't work for everyone. Each of us has to be honest about what we'd really do with an extra hour or two in the day, versus an extra day in the week, then decide what works best for us.