You should see a doctor whenever you have severe or new chest pains, even though the cause may be gastroesophageal reflux disease. Chest pains resulting from GERD usually begin with a burning sensation that seems to originate in the chest and runs up your throat, leaving a sour taste in your mouth. Other symptoms you might notice include hoarseness or coughing, a sore throat or difficulty swallowing. If these symptoms appear during or shortly after lifting weights, don't assume that weightlifting is the sole cause of your condition. Left untreated, GERD can lead to ulcers or scars on your esophagus.