Slowly lower the bar back to the ground. Start by pushing back your hips, then after the bar has cleared your knees, slowly bend your knees until the bar hits the ground. Your back should remain flat and your core engaged throughout the entire movement. Bonus: Take a deep breath before you initiate the lift. This will help you lift more weight by inflating the diaphragm and increasing the abdominal pressure. This will help keep your core strong and back stable throughout the lift.
Note: If you are lifting a barbell with no plates, the bar should come no lower than about 3 inches below your knee. If you’re gym has bumper plates or lighter weight barbells, throw those together for a lower weight deadlift where the bar can still reach the ground.