A starting point for Zone 2 heart rate training is 70-80% of actual achieved maximum heart rate, adjusted by perceived exertion.

“for to do this you do need to know your maximum heart rate not your predicted maximum heart rate but your actual achieved maximum heart rate in my experience personally so this is I don't know how much I can extrapolate this my zone 2 is actually at about 78 to 81% of my maximum heart rate but I know that for Less trained people it's lower so I tell people a broad range of 70 to 80% of your realized maximum heart rate is a good place to start and then make adjustments based on relative perceived exertion”

“but I know that for Less trained people it's lower”

“so I tell people a broad range of 70 to 80% of your realized maximum heart rate is a good place to start and then make adjustments based on relative perceived exertion”

“and then if a person is fit enough that they truly know their maximum heart rate we tell them to start at somewhere between 75 and 80% of that number”

“zone two intensity people will hear about zone two training all the time this is still kind of a low a light to a moderate intensity exercise so um it's going to Cor respond to an RP of about 9 to 12 60 to 70% of your maximal heart rate and then the talk test again you should be able to have a conversation in zone two if someone were listening to you they could probably tell you were exercising but in general you could hold pretty much a a full conversation”