Position yourself under a Smith machine bar with your upper back supported on a bench and knees on the floor. With feet placed forward and core braced, drive your hips upward by pressing through your feet until your body forms a straight line from shoulders to knees. Squeeze your glutes at the top, then lower back down with control.
Log your smith kneeling hip thrust sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.