Barbell Bench Press-Medium Grip:
Lie on a flat bench and firmly position your feet flat on the floor a little more than shoulder width apart. Keep your back flat on the bench! Using a grip broader than shoulder width, hold the barbell above your body, then lower slowly to the middle of your chest. Without bouncing the weight off your chest, drive the barbell up over the middle of your chest until your arms are straight and your elbows are locked. Lower the bar down slowly.
Barbell Guillotine Bench Press:
Lie horizontally on bench. Lift barbell from rack over the upper chest using a wide overhand grip. Lower weight to neck. Upper arms will be perpendicular to the torso. Press the bar until arms are fully extended. Repeat.