(not saying you don't, just curious, I know some rare individuals on Earth are like this)
But then again, sleep is super important to being productive but I wouldn’t call that work either.
It’s kind of a humblebrag.
Look, no one likes to feel like they're wasting their time, but with modern jobs, with the common "butts-in-seats for 8 hours" rule, we do waste a lot of time - much of that time is spent not working. It's dishonest to say that it's all spent working and I believe it does damage to a potential future where the "butts-in-seats for 8 hours" rule ceases to exist. If we value our time, let's start being honest, because then maybe that silly 8 hour rule can go away some day.
Over the last couple of months, probably about 6 hours. The two hours are breaks where I need to rest my head, but napping is not allowed. Or going for water / restroom. Idle chatting is probably around 15 minutes a day.
Assuming these are work, I do maybe 7-8.5hrs/ day