I read long back somewhere that bjorn borg had a resting heart rate or pulse rate (I don't know if the two are the same) of 37 or 39. I think it was in a reade

I read long back somewhere that bjorn borg had a resting heart rate or pulse rate (I don't know if the two are the same) of 37 or 39. I think it was in a reader's digest issue. https://en.m.wikipedia.org/wiki/Bj%C3%B6rn_Borg https://en.m.wikipedia.org/wiki/Bj%C3%B6rn_Borg