Peter Attia· MD
because there is so much confusion on this we look back historically all the data that's been used these all CA mortality studies and all the different pieces of liter out there 95% of them are from spot h measurements that where you're measuring at a specific time and you're doing this in standardized conditions as much as you can to get a baseline because we want to know where is your autonomic nerv system right now same time every day in the same conditions because what I want to know is last you know 24 hours you did something yesterday you did lots of things I assume you ate food you maybe worked out you maybe had alcohol or maybe you didn't you did mental stress or maybe didn't you put your body in a situation where it had to respond for for the majority of the day to do something and and then you went to bed and we want to see the result of that we want to see this stress and Recovery cycle that you went through yesterday because that tells us where your body is at right now how is it responding because we'll look at changes over time and understand how your body is is adapting to the world around you and that's what most HRV has been built on is we measure in standard conditions we see where you're at today and that informs us about what happened over the last 24 hours and and maybe slightly Beyond and the analogy is if I was going to weigh myself I'd want to weigh myself first time in the first in the morning in standard conditions I wouldn't want to have a meal and then go weigh myself I'd want to have very standard ways of measuring so I can see the changes because ultimately it's you changing against yourself that's the most informative so we wake up we measure HRV we see where you are and we see where you were what your averages have been what your variations have been and that tells us where you are today and that helps us make a decision about what are you ready to do right now or what's the most appropriate for you to do right now