There is also a special null type, the type of the expression null, which has no name. Because the null type has no name, it is impossible to declare a variable of the null type or to cast to the null type. The null reference is the only possible value of an expression of null type.
The military barbell press mainly works the shoulder, or deltoid, muscles. The anterior deltoid, the front head of the shoulder muscle, does much of the work. The side, or lateral, deltoid and the rear, or posterior, deltoid are also involved in the movement, although to a lesser degree than the anterior deltoid.
The bench press works upper body muscles including the pectorals, triceps and biceps. How to: As with the dumbbell press you do a bench press with your feet flat on the floor and your back on the bench. With your arms shoulder length apart, use an overhand grip to take firm hold of the bar.