Is impressively low! Damn you for being so uber athletic young lady! It's pretty amazing.
=) thanks and thanks I guess, yeah, was wondering what the GPS track was going to do! And my max HR is only 185 or so, (last time I kept track I was 15 and it was 205 or something!) so 167 is definitely working hard, if not quite Level 5! I'm thinking of trying to actually test my HR zones, because I'm basically just guessing atm.