Quote Originally Posted by Wahine View Post

160 isn't a bad HR to run at, it just depends on goals etc. If you can still breathe through your nose, you're golden. Where your aerobic zone falls depends on age, fitness and especially anaerobic threshold.

Whew!

People are so very different with HRs aren't they? In my riding group we have great variability in working heart rates. Mine is usually about the 160 mark whereas my friend very very rarely gets anywhere near 160 (she is a "low beater"). My BFs working heart rate is quite a bit higher than mine but will happily hold a conversation at a heart rate I'd be gasping at...