Dear Doctor K: Last time I went to the doctor, my heart rate was 55 beats per minute. What could be causing my slow heartbeat? Is it dangerous? Dear Reader: A normal heart rate at rest is between 60 ...

Is a Slow Heart Rate Dangerous? Just as an increased heartbeat can be problematic, a decreased heartbeat is also a dangerous ...

Normal Slow Walking Heart Rate Causes of Faster Heart Rate Measuring Heart Rate How to Lower Heart Rate When to See a Doctor You may know your target heart rate when working out or your ideal heart ...

DEAR DR. ROACH: I am a 64-year-old male who is a lifelong endurance athlete. For the past 15 years, my primary activities are cycling and swimming. I work out around 10 hours a week now, so it’s ...

Dear Dr. Roach: I am a 64-year-old male who is a lifelong endurance athlete. For the past 15 years, my primary activities are cycling and swimming. I work out around 10 hours a week now, so it's ...

Your heart rate naturally slows down before you conk out at night to shift your body into a rest and repair state. But everyone moves into this slower heart rate at different speeds, and there’s some ...

Researchers have identified bradycardia—an abnormally low heart rate—as a symptom of xylazine-opioid overdose. This breakthrough finding from the Icahn School of Medicine at Mount Sinai may help ...

Understanding your heart rate is crucial for more than just reaching optimal fitness–it can also help to reduce injury and ...

The investigators compared the decline in maximal heart rate with age among high, moderate, and low fit groups. The results showed that higher fit participants' maximal heart rate declined at a slower ...