<s>[INST] i ve always been able to move my arms in a windmill motion and every time my arms are reaching above my head, my shoulders pop or crack. only when i move them clockwise though. there is no pain associated with this. how can i get the shoulder to stop cracking? [/INST] Hello, This sounds to be a weakness of the deltoid muscle. I will advise strengthening the muscles of the shoulder girdle and upper back muscles. This will help reduce the clicking sound. Hope I have answered your query. Let me know if I can assist you further. Regards, Jay Indravadan Patel, Physical Therapist or Physiotherapist </s>