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 ...

For years, companies have tried to integrate heart rate monitoring into earbuds, but they never quite got it right. I tried several of these early attempts, only to find that the fit was never secure ...