Nope. A tentative hypothesis is sleep apnea, since my dad had that, but how well I sleep is extremely inconsistent (some nights I get excellent sleep, some nights I wake up a dozen times and am a zombie all the next day) and seems to correlate better with whether I’ve set an alarm than with any of the factors that are supposed to affect sleep apnea.
Nope. A tentative hypothesis is sleep apnea, since my dad had that, but how well I sleep is extremely inconsistent (some nights I get excellent sleep, some nights I wake up a dozen times and am a zombie all the next day) and seems to correlate better with whether I’ve set an alarm than with any of the factors that are supposed to affect sleep apnea.