There's no expectation you're going to work 8 hours in the office. What if you're taking a break? What about drinking a coffee? Chatting with coworkers? Playin

There's no expectation you're going to work 8 hours in the office. What if you're taking a break? What about drinking a coffee? Chatting with coworkers? Playing table tennis or some arcade videogame in the break area? Various studies point at a lower bound for endurance when doing knowledge work. Some say 4h. As long as they get something done those employees will still feel like they put in their day of work and they will still get good reviews. Could they have done it in half the time? Maybe, but who can tell? I'm my own boss and I'm paid if I deliver results (and I think everyone should work like this, being an employee is opaque and overall sucks for earning potential if you are a good performer) but sometimes I put on a movie on a second screen while I'm working, mainly to make dull work (it's crazy how much you can charge to write the same old boring API or the same old Reaxt component for the n-th time) more tolerable. I'm definitely working slower but at least I'm getting things done without losing the will to live. Am I stealing time from my business?