My HR is high, too. I'm 44 and so far have seen a max of 192 (at the end of a 10K running event). During that same 10K, my HR stayed pretty much at 186. I've been running for over four years so I'm in pretty good shape, but isn't 97% of MHR a little high for that long? I felt good the whole time, wasn't wiped out afterwards, etc. When I woke up that morning and put on the heart monitor, my HR was 90 (after I got out of bed and started walking around) whereas it's usually around 80, so obviously I had some adrenaline working. Maybe my MHR is actually higher than 192 - I don't know. I'm still trying to figure it all out. HR is always lower on the bike, but it does shoot up on climbs.

It does seem to take some experimenting and adjusting for everyone.--

Deb