I'm doing a real four day workweek since the beginning of this year and I'm never going back. And by "real" I mean 4x8 hours.
There are so many companies out there trying to push 4x10 as a benefit. Dude...that's just the same amount of work in one day less. I want to get more work life balance, not burn myself out faster than before.
A lot of old farts telling people like me we are too lazy and need to work harder. Their rage is my fuel. Since the economy is fucked anyway and working late into the night only benefits my employer, I might as well just take a little salary loss and do the things I like instead.