For a while there a few years back most of my students were around a full head taller than me (I'm 5'9") and outweighed me by quite a bit. Everyone in my dojo was physically stronger than me except for my wife. I even had one guy whose job it was to walk up a mountain in the morning, move rocks around to repair footpaths and walls while he was up there, and he'd then walk down the mountain and come to the dojo. Big, strong, rather stiff in his movements as a result of the hard labour he was doing all day.
I made them all practice with my wife who usually floored them with rather satisfying thumping noises as they hit the tatami