Andrew Huberman· PhD
there are a couple of variations that you can do to make it harder one is to draw boxes with the extended Fist and the extended foot that's actually a coordination issue too for some people so some people choose to do a box with their hand maybe they do it clockwise then they do it counterclockwise some people choose to do the hand and foot moving in a box together meaning simultaneously sometimes they'll alternate foot then hand this sort of thing any kind of movement that you're doing with the extended Fist and or foot is going to add some degree of difficulty to this but you want to make sure that if you're going to add those movements those progressions that you're keeping the pushing away way of the floor constant throughout and that you're keeping your torso parallel to the floor as you go