My resting #heart rate (RHR) during past last week ranged from 41 to 47 bpm (average HR 45 bpm) 1. Lower HR (without use of medications) has severa

My resting #heart rate (RHR) during past last week ranged from 41 to 47 bpm (average HR 45 bpm) 1. Lower HR (without use of medications) has severa