Bradycardia does not often cause symptoms. If symptoms of bradycardia do occur, they may include fatigue, lightheadedness, and exercise intolerance. A slow heart rate in young people or athletes or ...

Reflex bradycardia is a reflexive response from the autonomic nervous system that causes the heart rate to slow. Triggers may include submerging in cold water or physical pressure on certain body ...

When working out, you expect your heart rate to go up. In fact, increasing your heart rate during exercise is the best way to monitor your health and fitness level. But what if your heart rate stays ...