Found it and loved it for about 1 day.
But then I realized I'm starting to adjust to that, and to slack off too much just to make the 25min pass. And 5min breaks are silly and useless.
What I do now is work per task, whether I like it or not, I do finish one single thing and then take a break, a nap, whatever, and then do another one etc. Not saying it's the way to go, just doing it like that.