You could easily have sleep apnea. You didn't mention caffeine, but the half life of caffeine can be over 12 hours. Even if you limit yourself to two cups of c

You could easily have sleep apnea. You didn't mention caffeine, but the half life of caffeine can be over 12 hours. Even if you limit yourself to two cups of coffee at 8 am, you'd still have as much caffeine in you as if you had one cup of coffee at 8pm. The rule of thumb about "no caffeine after noon" is just unreasonable, it really should be "almost no caffeine".