You'd absolutely have the energy for it as a kid. When I was little I ran constantly, climbed trees, trudged up steep hills so I could roll down them and I still had energy to spare, unlike now where if I walk for to long I need to take a nap.
Bro, just admit you like your childhood friend already. It's not like childhood friends couldn't use the win given how often series make them the losing hero/heroine because it's more bittersweet that way.