Every now and then I develop some shoulder pain in my right shoulder. I breath to the left side mostly and shoulder pain is usually due to a technique deficit like crossing over in front of your head or other circumstances.
I had Clay Evans; founder of SCAQ, watch me swim and he said that when I get tired I put undue leverage on my right shoulder by pushing water down instead of back. He said I am pushing the water down like a fulcrum to facilitate a breath rather than to facilitate moving forward.
I told him I am going to put this on the blog and he said he would look at anyone's stroke if they come to one of his workouts. This includes non-SCAQ swimmers as well. (310) 390-5700