Learn to read your pulse for hidden heart problems. Rhythm irregularities and rate changes reveal cardiovascular issues.

Irregular heart rate? If your pulse is under 40 bpm or higher than 100 bpm you should consult a doctor to check whether you are suffering from heart palpitations that need to be treated.

So why does so much fitness tech check your pulse? Because your resting heart rate can say a significant amount about your health, including when it might be time to seek immediate medical care.