No sport is less organized than Calvinball.
Weekends don't count unless you spend them doing something completely pointless.
Happiness isn't good enough for me! I demand euphoria!
A playful mind is inquisitive, and learning is fun. If you indulge your natural curiosity and retain a sense of fun in new experience, I think you'll find it functions as a sort of shock absorber for the bumpy road ahead.
Hobbes: How come we play war and not peace? Calvin: Too few role models.
It's a magical world, Hobbes, ol' buddy... Let's go exploring!