How do you lose shoulder muscle?

Exercise Your Lower Body
  1. Rowing.
  2. Shoulder press.
  3. Bench press.
  4. Lat pulldowns.
  5. Pull-ups.
  6. Any overhead pushing or pulling exercises.
  7. Lifting heavy weights.

How do muscles go away?

No, muscle doesn’t just disappear. It’s still there, but it shrinks. This is because it costs your body energy to maintain muscle, so if it’s not being used, the body will stop expending the energy needed to maintain it. It’s just one more example of your body functioning as an efficient machine.