That little number on your fitness tracker might be more important than you realize. Your resting heart rate isn’t just some random vital sign. It’s essentially a window into how efficiently your ...

For adults, a normal resting heart rate is between 60 and 100 beats per minute. To measure your heart rate, place two fingers on your wrist or neck, count the beats for 15 seconds, then multiply by ...

It’s easy for the heart rate to rise quickly due to exercise, stress, anxiety, seeing the person you like or even hot weather. Getting your pulse to come down in the moment can be more challenging, ...

Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...

Stress takes a toll on the mind and the heart. It can impact heart function at a molecular level, triggering increased inflammation and “leading to the release of harmful molecules that contribute to ...

To live is to have a heartbeat, which is why it makes sense for us living things to have a good understanding of our ticker. It’s well-known science that our hearts beat faster when we exercise and ...

Understanding your heart rate can be helpful to calibrate your perceived exertion, especially on easy and steady runs. This ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...