Set up the smith machine with the bar at hip height. Stand facing the bar with your feet shoulder-width apart. Bend your knees slightly and hinge forward at the hips, keeping your back straight. Grasp the bar with an overhand grip, hands slightly wider than shoulder-width apart. Pull the bar towards your lower chest, squeezing your shoulder blades together. Pause for a moment at the top, then slowly lower the bar back down to the starting position. Repeat for the desired number of repetitions.
GIF