I think, "I wonder if this hooker charges extra for sleeping over..."
One distasteful joke later, the answer appears. I have three different ways I fall asleep.
The first way stems from just being way too tired. If it's a busy day and I work, go to class, play tennis, and run for exercise, I usually just crash into bed after a nice warm shower and think one single thought before my mind drifts into dreams.
The second way is similar. If I have been binge drinking, I will go straight to bed after the night is over and there will be no time for even just one thought; there's only sleep, or in this case, recovery.
The final way I fall asleep occurs roughly 72% of the time. I lay in bed and think about the next day to come, and what I want to do with it. The only problem is that by the time I decide on something constructive to do the next day, I've fallen asleep, woken up, and forgotten there was even a plan.
But at least I can try again tonight.