I really wonder what zips through Henry's mind all night long. What makes him bolt out of bed upon waking up and declare that he needs his boots? Once he made it downstairs he dragged them out immediately, ignoring the usual milk and breakfast. Hunger can wait. Boots cannot.
One theory I have heard is that aside from the needing to let their bodies grow and recover, toddlers need lots of sleep to develop their brains. Adults have their routines and experiences programmed deeply in. For example, we do not even think about how to handle our morning commute. Toddlers are still building those grooves and need a long night of dreams to relive the day and parse through the experiences and memories. They're filling up their changing brains.
I have no clue how accurate that is, but it doesn't sound too bananas. And it doesn't sound like there is any harm in believing it.
I have noticed that like my 5 cd changer, I can occasionally program his dreams to a degree. On Friday nights I often tell Henry upon bedtime that tomorrow morning he'll see Maggie at Saturdays with Daddy, so he needs to get a good night of sleep. It's not odd to hear him stirring to life on the monitor at 8am uttering, "Maggie. Maggie."
This is all very charming, but where the boots come from is beyond me. I know that a smiling Henry is never more than 1 or 2 random sentences away from graders, excavators, or trains. The guy loves the construction site more than anything else, so my money is that he anticipates hitting the job site as soon as he wakes. I'll try to remember this zeal in 15 years when he's sleeping till noon at every opportunity.