When we would let Puppy off her leash to run she would lose ten years, figuratively. It would always be a chore to get her back on the leash and bring her home, she loved running in the hills near our house so much. It took ten years off my age just watching her, it would bring me back to a time that everything was new, fresh. Puppy must have run through those fields hundreds of times, but she was always excited to run through them again. I learned from Puppy that a good run does you good, and it makes your life that much more fun when you get excited about things you love doing.
Image credit: cloneofsnake