Saturday Morning Wake Up Call

Every Saturday morning, I know when it is time for me to wake up but the sound of my roommates stomping above me. Not that I mind; I actually appreciate it. Every Saturday they do their workout video in the living room. Since my bed is right below the living room, I wake up around the same time every Saturday. It's a good thing too, because I'm afraid if there wasn't any stomping I'd sleep through Saturdays :-)