Hi, thanks for the query. I am curious to know that who told you that you are having precordial catch syndrome (PCS)? Was it a certified medical doctor who diagnosed this condition in you? Since it is fairly rare & usually a diagnosis of exclusion. You might be knowing & if NOT; you need to understand that if you are having PCS; it is a benign condition which probably originates form bones of rib cage (sternum & ribs) or the covering over lungs (known as pleura). The syndrome is disabling due to nature of episodes of intense pain on left side of chest which are usually confused as having heart attack or evaluated for pneumothorax. As such you need to practice mindfulness based relaxation exercises (taught by Psychologist) & Yoga, pranayama exercises which shall help you to stay relaxed during the bouts of pain & will help you cope effectively with same. Try to stay calm, rejoin your gym & start your workout once again! Good Luck!