Some days are just easier than others. Not necessarily better, but you've got some kind of extra drive. Easier to wake up. Easier to get up on the horse - no I mean the bike - and go to school. Easier to study. Easier to get up on the bike again and go to a yoga class. What I've learned is to use these days and make the most of them, it makes it more probable that the next day the drive is still there.
Today was an example of an easy day, and oh how good it feels after weeks of hibernating.