Shoulder Pain Gone After Qi Gong

Good morning thank you for QI Gong session
My left shoulder pain has totally gone as my left hand was spinning 360 degree few round yesterday during Qi Gong session.
My left knee is much more moveable now after the session.
My upper body, shoulder and neck are totally lighter than before and many other part of body was in pain and ache was gone.
Thank you for this wonderful session