As they say, time flies when you are having fun (or busy or both). Both would be my situation.
I'm not only leading five fitness classes a week, but also eyeball-deep in studies, having completed four of my textbooks so far and about ⅓ into the my fifth. I'm learning so much and having so much fun experimenting with different recipes for nutritional purposes. I love to find ones to tweak for my preferances or create new ones based on what I have in the kitchen.