Thank you for working so hard every day—even when I don’t notice it. I’ve learned that every time I walk, run, play, or even sleep, you’re busy turning the food I eat and the oxygen I breathe into energy through called aerobic respiration. You’re always making sure I have enough ATP to keep going.

I promise to take better care of you by breathing deeply, eating healthy food, and staying active, because now I understand how important oxygen and energy are to everything I do.

With appreciation,

Juan dela Cruz