Due to a fall (during training) on my left shoulder, about 6 months ago, I've been experiencing mild to severe pain in my left shoulder. Pressing the AC joint hurts and upward movements tend to increase the pain. Even after weeks of slight to no training, the pain comes back fast after light boxing. I've been placing a EMS device daily, for about a week now. Will I benefit by this or not? Next to that, I take Brufen to reduce inflammation and pain.