Going higher than your maximum heart rate for long time periods can be dangerous for your heart and your overall health. That’s especially true if you’re new to exercise. Be sure to talk to your health care provider before you begin any new exercise program and include any concerns you may have. A study of recreational hockey players found that those who continuously exceeded their target and maximum heart rates while playing had poor recovery rates after activity. They also increased their risk for cardiac events such as: Arrhythmias
Chest pain
Discomfort
Aim for a more comfortable pace if you’re consistently reaching your maximum heart rate while running. Stop right away if you feel lightheaded, dizzy or sick. Your safety is the number one priority.