Quote Originally Posted by OakLeaf View Post
I read something a while back about people whose resting HR was below 40, needing to take caffeine to keep their resting HR at a level that will supply enough oxygen to the heart and brain tissues. That's not me... I don't know my true resting value, but when I just lay around for a while it's in the mid to low 50s... but I think I'd worry if mine got TOO low.
Interesting...I've never heard of that being done before. Usually if somebody's heart rate is too low to get enough O2 to their brain etc. they get a pacemaker (assuming, of course, that the low HR isn't due to something reversible like a bad reaction to a medication).