Zone 2 training is characterized by lactate levels of 1.7-1.9 mmol/L and allows for a conversation with some strain.

“if you can talk but it's some form of strain you can talk for 2 hours right um uh but we're talking yeah you're just at you're just at that threshold of the per put it this way the other litmus test I tell people is the person on the other end will know you are exercising exactly you will not be able to mask from them that you are exercising exactly”

“if you can exercise whatever the exercise you do and maintain a conversation like you and I are doing you're way too easy you're probably Zone one”

“1000% and and I use the same metrics also with people who like you know like you mentioned they they don't want to do a har um lactic meter or they don't have access or or they I get hundreds of emails about where can I do this test you know and I or or is there anything that I can do right um so and I agree 100% you know that um with everything that we know at the at the granular cellular level by injecting fuels and substrates directly into the Mand we cannot get more cellular level and scientific that that the surrogate or the pafic exertion it works beautifully”

“but if I can't talk if I feel like I can't talk I'm too high in the intensity yeah”