How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

When it comes to exercising, your heart rate is the gold-standard metric to uncover how hard you're pushing. It tells you whether you're working aerobically or anaerobically, how your body is reacting ...

Tracking your heart rate with a heart rate monitor (HRM) during your runs is one of the most powerful ways to optimize your training, whether you're a dedicated marathoner, power triathlete, or just ...