I doubt it. Once your body get's used to keeping a certain schedule, it's hard to change it. My DH worked the graveyard shift for many year's before he retired. He's already been retired now for several year's, and he still stay's up late (and wakes up late). I can't do that.We've been keeping these hours since spring of 2015--do you think we'll ever have "normal people" body clocks again even after he retires? I kinda doubt it.