That doesn't sound unusual. Back in my coding days, I could get into the zone for 4-5 hour chunks of time, but only if uninterrupted, which was rare. I'd say

That doesn't sound unusual. Back in my coding days, I could get into the zone for 4-5 hour chunks of time, but only if uninterrupted, which was rare. I'd say a typical day had 2x 2.5-3 hour blocks of productive coding, the rest of the 8-10 hour work day was meetings/conversations/etc plus an hour or two of not-work (internet, walking outside, etc). This varied quite a bit over time, based on team and project. Greenfield projects, usually done in a group with lots of peer-programming and fast iteration were quite different than solo maintenance of legacy codebases.