Compound lower body movements like lunging patterns, squats, hack squats, or leg presses are sufficient to train all major lower body muscles effectively.

“integrate some kind of lunging pattern into that or some kind of squatting pattern be it a hack squat leg press barbell squat you name it and all of a sudden you've run out of muscles to train in your lower body because everything has been uh done to a high degree of diligence”