Counter anecdata: One summer, I didn't have AC available so I forced myself onto the early bird schedule for 3 months so that I could run at the daily temperatu

Counter anecdata: One summer, I didn't have AC available so I forced myself onto the early bird schedule for 3 months so that I could run at the daily temperature minimum. It did not "reset my brain" or "make me wake up faster" -- I was still groggy after my run with metabolism ramping during the day and peaking at night (with dips after meals), just as it was before + after.