[Andrew Bollard]

@MountAire:

If your heart rate is getting elevated above your aerobic threshold for the majority of that 60 mins, it strikes me that that is an anaerobic training stimulus that should be tracked and counted as a Z3/Z4 effort (although I’ll defer to any of the coaches on this). Is it HIIT/Crossfit/circuit training-style stuff that you’re doing?

What are your current training goals? If you’re aerobically deficient and are looking to build aerobic base, then you shouldn’t be doing any moderate/high intensity running anyway.