Speaking as someone with over 40 years paid programming experience, I've never understood this "flow" thing. I typically do about half an hours typing, get up and walk around, mooch over to colleague and yack bit, or go to the coffee machine, or just think a bit and then go back to the keyboard.
Never used headphones - if the environment is too loud, make it quieter. I once moved into a new office area that had a dot-matrix printer that "logged", in the worst sense of the word (how could you find any access on such a giant printout), every door open/close in the block. It was beyond annoying (ever heard a DM printer? only thing worse is a daisy wheel) so I simply unplugged it, took out the ink ribbon and twisted off the print head. It was never replaced, because as is very often the case nobody ever used the "reports" it produced.
Half an hour of typing would be above average attention span for the youth these days. That's pretty much how Pomodoro Timers start out for people who can't focus at all.
>if the environment is too loud, make it quieter.
we shifted to open office setups over the decades. There may not even be anyway to make things "quieter" externally.
Never used headphones - if the environment is too loud, make it quieter. I once moved into a new office area that had a dot-matrix printer that "logged", in the worst sense of the word (how could you find any access on such a giant printout), every door open/close in the block. It was beyond annoying (ever heard a DM printer? only thing worse is a daisy wheel) so I simply unplugged it, took out the ink ribbon and twisted off the print head. It was never replaced, because as is very often the case nobody ever used the "reports" it produced.