Steady Heart Rate and the Science Behind It

I started monitoring my heart rate in my early twenties as a measure to improve my rowing. I used a calculation of 220-age to calculate my maximum intensity, and then do the bulk of workouts between 75 to 85% of max with the occasional trip into maximum level of intensity.

This blog post explains the benefits of a keeping a steady heart rate during a workout.

https://www.theopinion-ist.com/post/how-to-keep-your-heart-rate-steady-during-a-workout-and-the-science-behind-it-the-opinion-ist