Join Date: Nov 2005
Location: Durham, NC
Bikes: Cannondale Synapse 5c, Scattante XRL
I managed to get TOO low this summer. I went in for my first (and I hope, last) endoscopy. Lying on the table and waiting for the doctor to arrive was making me nervous so I deliberately concentrated on relaxing. Around this time the nurse hooked me up to the heart monitor. She looked at it for a minute and asked me if I normally had a low rhr, because I was currently at about 45. I told her I did, but that I didn't normally go THAT low. She watched the monitor for a minute, then pushed a button and a strip of paper spat out. She tore it off and left without a word.
Long story short: my heart skips a beat every once in a while when I'm extremely relaxed. It's common in very fit aerobic athletes. I'll bet lots of folks here on BF have this condition too; it's called "Weinckebach" (pronounced winky-bach).