8 hours max. My intellectual productivity peaks 3 to 4 hours after I wake, and it's pretty non-existent 7 to 8 hours after I wake.
It's not fair to yourself to work beyond a sustainable amount: once you pull a weekend shift or two, your boss starts to expect it even when you can't do it, and you set yourself down an unsustainable path. I make it clear to my bosses that I won't do this, and if they need me to, it's a sign of corporate disfunction, not my own.
Productivity trick: I diligently incorporate exercise into my commute: I either bicycle or run (with backpack) as part of my evening commute, roughly year round. Combining the activity with bus routes makes this feasible in most large cities, and the activity quickly becomes the most enjoyable part of my day.
I have a few hours in the evening designated as non-work time, and I never work weekends.
It's not fair to yourself to work beyond a sustainable amount: once you pull a weekend shift or two, your boss starts to expect it even when you can't do it, and you set yourself down an unsustainable path. I make it clear to my bosses that I won't do this, and if they need me to, it's a sign of corporate disfunction, not my own.
Productivity trick: I diligently incorporate exercise into my commute: I either bicycle or run (with backpack) as part of my evening commute, roughly year round. Combining the activity with bus routes makes this feasible in most large cities, and the activity quickly becomes the most enjoyable part of my day.
I have a few hours in the evening designated as non-work time, and I never work weekends.