[madeuptempacct]

I have never bought this. I work out (and have for the past 15 years) from 9 - 11pm and go to sleep almost immediately after.

Maybe you are talking about initial habit formation.

For me, mornings are a horrible time to do anything. I prepare my clothing, pack my lunch, plan my day, etc at night, just to make waking up "easier", knowing that everything is laid out for me. And yes, I do wake up at a set time.