Set up olympic bar by putting on the desired weight and secure with the collars and put bar at desired height.
position yourself under the barbell (barbell will be across back of the shoulders) and with your feet firmly on the ground.
Grasp barbell with overhand grip wider than shoulder width (thumbs facing each other).
Lift barbell off the rack and lower bar down buy bending your legs in a controlled manor while exhaling.
Pause slightly then return to the starting position, while inhaling.
a variation of exercises can be performed with the squat rack.