If you are just starting out, make sure your shoulders are warmed up. A good warm-up could include something as simple as using the dumbbells for the first set of an exercise. Weights for these exercises should be light because the delts are rather small muscles. One of the best shoulder workout is the overhead dumbbell press. You can do this either standing up or sitting down. The best way is to do it standing because it will work on your core muscles, but today we will focus on the sitting overhead dumbbell press. It too can help develop your shoulder muscles.