don’t just slide the legs when standing up, imagine yourself standing up from that position – one foot is anchored to the ground and you shift your weight around it. You gotta animate that type of momentum

punches were just arms flailing around, from such a close/static position it’d be tough to animate a realistic looking punch, but again, just imagine yourself performing the motion and pretend you had a camera snapping a photo of you every 0.1 seconds – recreate those photos as your frames