Yep, even after four weeks sober I'm not especially physical and there were a couple mornings this past week when I could have used a few more hours of sleep but had to get up anyway for work.
Kind of sleepwalking and feeling weak at times, no motivation to exercise, but on the other hand I have had some peppy moments with bursts of energy and was riding my bike around for errands today. This evening I walked a block or two to get out from under the trees so I could see some fireworks.
P.S. -- a lot of talking often wears me out, too, whether it's me talking or (usually) someone else going on and on.