Great that I got a good night's sleep.  And in a vacuum, I'm not against going to bed at 10:30 and waking up at 6.  But when the only thing you have to do is a party at 2, and the thing you want to do is fixing sprinkler heads and it might have rained overnight, you're not wanting to do anything, even if I have as much energy as I'll ever have.

Well, I do have to water the plants.  And wash some dishes, like I wanted to last night.  And, you know, if it rained overnight, I won't have to really fix the sprinklers, do I?

All of a sudden, whoo! I'm tired.  I'll ... think about doing something and then either do it or not do it.