Bah it has nothing to do with old age. I don’t do well in a full 8-9 hour day either. My only saving grace is that my job requires a lot of out-of-the-office work, site inspections/investigation, pre-tender meetings, etc… Those days I seem to do alright, but I suspect it’s just the blood (after climbing 16 floors worth of stair I should hope so) being allowed to flow instead of all pooling at my feet after sitting in front of the compute writing reports.

As for the crazy hours… I would preferably be on a 10 am to 3 am schedule if I could. When I first moved out I had a delightfully nocturnal existence (3pm to 7am, work included)