What your resting heart rate should REALLY be at your age – and whether you should worry about what your smartwatch tells you

A normal healthy person’s resting heart rate, sometimes shortened to RHR, is normally between 60 and 100 beats per minute , though extremely healthy athletes can get this down into the 40s.

https://www.dailymail.co.uk/health/article-14095805/healthiest-resting-heart-rate-age-smartwatch-lying-you.html?ns_mchannel=rss&ns_campaign=1490&ito=1490