Yeah there's a ton of free info on Zone 2 but I'll check that out, thanks.

I know from my personal experience that my performance has improved by going slower. Measured on the stationary bike (HR, resistance, speed). Performance keeps going up, at similar HR.

Only thing that seems to be debated is duration. Some claim a minimum of 45 minutes. Others say longer. I think six hours per week is still not considered much but anything is better than nothing.

Zone 2 training is supposed to help with resting HR and longevity. Almost like the human body was designed and optimized for it grin