Endurance athletes often have low resting heart rates as a result of intense training, but a new study published in Circulation suggests that a predisposition to prominent bradycardia may be encoded ...

Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels, exercise capacity and even how well you are ageing.

(Wednesday, 6 May, Maastricht, the Netherlands) A new study presented today at the European Stroke Organisation Conference (ESOC) 2026 suggests that both very low and very high resting heart rates are ...

The human heart is an extraordinary organ, responsible for tirelessly pumping blood to deliver oxygen and nutrients to every part of the body. Its rhythm—heart rate—is an essential vital sign checked ...

Consistently high heart rate may signal dehydration or poor recovery. Resting heart rate indicates fitness; healthy ranges are 60–100 bpm, 40–50 for athletes. Consistently high or very low heart rates ...

DEAR DR. ROACH: I wear a smart watch, and a few times now, it has alerted me that my heart rate is below 45 bpm. This has only occurred when I’m in my recliner, relaxing and starting to nod off. I am ...

To get a sense of what average running heart rates look like for the pros, we peeked at some of their public Strava posts.

Whoever we are, whatever we’re doing, we have a measurable heart rate. It’s a pretty clear sign of being alive. But what should your heart rate be when exercising? When we exercise, our heart rate ...

Low intensity exercise encompasses activities that aren’t challenging and don’t increase your heart rate much. It can still provide health benefits, particularly when done more often. Exercise is ...