Where's the off switch?

Does anyone know where the off switch is on my 13 month old? So far hes ran around the house for two hours straight and then we went outside and ran, climbed, and played in the dirt for a little over five and a half hours non stop. I've been trying to get him to take a nap and he just wants to keep playing or jump on my head 🤣 this boy keeps me in great shape.