Is drinking coffee good for you or is not being able to drink coffee bad?
Many studies have shown that those who drink coffee frequently have a lower rate of all cause mortality. Many can't drink coffee because it causes stomach problems. Instead of thinking that coffee improves health, has anyone considered that coffee intolerance is an indicator of poor health? I'd love to see a study on people who are intolerant to coffee. It might actually lead to something useful. I know I used to drink it with complete immunity when I was young, but now I can't drink more than one cup a week without getting ulcers. Something has changed in me and I'd love to know what it is and how it affects my overall health. I can say that I'm definitely closer to death at age 47 than I was in my 20s when I easily tolerated 4 cups a day.
HRV DFA Alpha 1 for zone two training
This is just a "bump" to several other AMA questions requesting more info on using DFA for determining Zone 2 (LT1) limits. As others have noted and referenced, Marco Altini, PhD has written some of the papers used by Bruce Rodgers, MD etc... Marco is also a "Data Science Advisor" to Oura, so it should be an easy connection for the team.
Improving VO2 Max and 2 Minute HR Recovery Time
We've talked a lot about training your mitochondria with Zone 2 training, but as someone who wants to get more into running, what are the best ways to increase my VO2 max and dramatically increase my 2 minute heart rate recovery time? Secondly, what do you think of 2 minute HR recovery time as a metric for longevity?