You should stop exercising and seek immediate health care if you experience\

If you experience any warning signs such as shortness of breath, dizziness, tightness in chest and arm, severe chest or arm pain.

Explanation:

These symptoms are indicative of a angina attack, a potential heart attack, an exercise-induced asthma attack etc. Hence, these cardiovascular and respiratory symptoms needs urgent medical attention to find out the reason. It is generally recommended that patients with cardiovascular disease conditions shall do light exercise, brisk walk etc. and shall avoid strenuous exercises.

either two or three