Q.What are the warning signs that you are overdoing it with your exercising? A.The three most dangerous signs are chest pains during exercise,heart palpitations-a sudden fast heartbeat-when you're idle,and unexplained dizziness.If you feel such symptoms,you should stop your exercising and check with your physician. Q.Does exercise help much in taking off weight?Q. What are the warning signs that you are overdoing it with your exercising? A. The three most dangerous signs are chest pains during exercise, heart palpitations—a sudden fast heartbeat—when you’re idle,and unexplained dizziness.If you feel such symptoms,you should stop your exercising and check with your physician. Q. Does exercise help much in taking off weight?