I’m a 34 year old male in good physical shape and conditioning. I recently started boxing with a seasoned boxing trainer and former fighter. I have no previous boxing experience. I’ve had about 3 sessions with him and I’ve hit the bag on my own some in between session over the course of about 2 weeks. I worked out with him last Saturday, then hit the bag on my own Sunday and Monday and then worked out with him again this last Tuesday. Yesterday, (4 days after my last workout) Saturday I tried to work out with him again but sort of had to take it easy because my jab shoulder is hurting to throw a jab or hook with that arm. My trainer was putting 2lb weights on my arms for a short portion of the workout and I think that may have contributed to it. It seems like a mixture between mayve somewhat sore muscles and some irritation within my shoulder. Any tips?? Has anyone else experienced this while being new to the sport?