Exercising helps achieve good body posture, strength, balance and get muscle mass. You can build shoulder muscles in the comfort of your own home just by using your body weight and dumbbells.
Place your hand on the pull up bar and let your legs hang loosely. Your hands should be at shoulder width apart. Start pulling yourself upwards until your chin is a little over the bar level. Stay in this position for a second and then slowly lower yourself to the starting position. Concentrate on your shoulder muscles while doing this exercise. Preform three of four sets with 8 to 10 repetitions. This exercise will also build muscles on your arms, back and chest.
This is probably the best body weight exercise for your upper body. Place your hands on the floor, a bit more than shoulder width apart, with your fingers pointing forward. Extend your legs behind you so your feet are resting on your toes. Keep your back straight all the time. Start lowering your body towards the floor until your chests are just a few inches over the floor. Stay in this position for about a second and then slowly return to the starting position. You must do 20 repetitions of this exercise in 3 sets.
Stand straight, with your legs at shoulder width apart, and your arms hanging beside your body. Start lifting your arms until they get in the position parallel with the floor. Stay in this position for a two or three seconds and then slowly return to the starting position. Do 20 repetitions in 3 or 4 sets.
Front Deltoid Raises
Like in previous exercise, stand straight with your arms hanging beside your body and feet at shoulder width apart. Start lifting your arms in front of you, parallel with each other, until they are parallel with the floor. Stay in this position for 2 or 3 seconds and then gradually get back to the starting position. Do this exercise with 20 repetitions in 3 or 4 sets.
Take two stable and heavy chairs of the same height. Place them back to back so that you can fit between them. Put your hands on their backs, bend your legs, so they hang in the air, and slowly start to bend your elbows and go down until your upper arms are parallel to the floor. Stay in this position for about a second and then slowly start rising up to the starting position. Do this exercise in 3 sets with 10 repetitions. Not only that this exercise will help you build your shoulder muscles, but also your arm muscles, chest muscles and back muscles.