Class Craft PE

We just started using Classcraft and my son made a great suggestion. We made a separate Classcraft class for PE. We give XP for exercises, gold for completing whole workouts, not eating treats, and for persuading someone to workout with you. We also created quests of workouts for those not motivated enough to simply do a whole workout. His idea was that as your own body and health progress, so does your avatar. I thought it was a great idea and wanted to share it with other families. 

What do you do with Classcraft in your homeschool?