Peat famously hated the idea that there was a set "Ray Peat diet". Annoyingly, the misrepresentation of Peat's framework has gotten worse over the last 2 years and we are now at the point where countless grifters, particularly on X, are profiting by spreading a distorted version of Peat's work which basically just amounts to eating raw carrot salads and chugging orange juice.
When you take the time to actually read Peat's blog posts and listen to his interviews, there is one simple idea that underpins his whole body of work. This is idea that your approach to dieting should involve you actively monitoring how the things you eat affect your body rather than following prescribed diets or eating certain things just because mainstream nutrition says they're "good for you". Studying the underlying physiology in abstract terms can be helpful, but ultimately the only way you can determine your optimal diet is by experimenting with eating different things and seeing how they affect you. This idea is what inspired me to build Hyperio, an app which allows you to see how your diet, supplements and other choices are impacting your physiology.
How does Hyperio work?
In a nutshell: each day, you complete 3 quick check-ins. These check-ins are what the app uses to assess your physiological status - no bloodwork, no invasive tests. You get given a score for your metabolism, cognition, testosterone, cortisol, and circadian rhythm + an overall score that brings all 5 aspects of your physiology together. These scores are cumulative and updated daily, so they reflect trends rather than just what you recorded that day. You also log your supplements, food + any relevant activities (like going to the gym) throughout the day. The app then analyzes your data on an ongoing basis to report any Correlations between your choices and your physiology. For example,
"Since you have started taking creatine, your cognition scores have improved"
"Days after you train legs at the gym tend to show higher testosterone scores"
"Since you started taking aspirin, your metabolism scores have improved"
These Correlations can be positive or negative. Once reported, you can follow these Correlations. This provides you with the data indicating how strong the association is, updated on an ongoing basis. You can also analyze the data yourself to check for associations before a Correlation is reported.
The wake-up and end-of-day check-ins involve the app asking questions and getting you to rate various things related to your metabolism, testosterone, cortisol, and circadian rhythm. You don't need a wearable or any equipment to complete these; however, there are a few empirical inputs you can choose to record that give the app a more accurate reading. These inputs include your weight, body temperature, heart rate, and grip strength. Many of the inputs related to metabolism are proxy markers of basal metabolic rate and thyroid function that Peat specifically recommended monitoring. There are additional inputs that may be relevant to you depending on your lifestyle, such as gym and exercise performance. Some things the app will ask every day; other things are asked on a less frequent basis. This means your check-ins will be slightly different each day. Each input has a '?' icon next to it, which explains exactly why the app is asking you something and how it relates to your physiology. The wake-up and end-of-day check-ins shouldn't take longer than 5 minutes to complete. Female users automatically have inputs related to testosterone removed from the app, and if you aren't interested in any other domain (for example, if you wear a watch that already tracks your circadian rhythm), you can turn it off.
The mid-day check-in assesses your cognition. To do this, it gets you to do 4 things:
- Play a focus game
- Play a memory game
- Complete a daily recall
- Complete a daily quiz
You can only do these things once a day, no repeats - this is so the app can get a snapshot of how your brain is working day by day.
Hyperio gives you a metabolism, cognition, testosterone, cortisol, and circadian rhythm score + an overall aggregate that brings all 5 scores together. Before giving you any scores, Hyperio needs you to use the app for a few days so it can get a sense of your baseline - this is called the 'calibration period'. You can choose to calibrate the app for 1, 3, or 5 days. Calibrating the app for 5 days will result in your scores being more accurate, and it will make Hyperio more useful for you.
Hyperio Insights is the section of the app where you log what you are taking, eating, and doing throughout the day. Effectively, you can log anything that has an effect on your body. This includes, but is not limited to:
- Supplements
- Food
- Activities (like going to the gym or meditation)
- Caffeine
- Peptides
You can also log ongoing lifestyle changes, like limiting screen-time or semen retention.
The app analyzes your data and reports anything it finds to you on the Correlations page. The app needs to gather a large enough sample size to justify reporting a Correlation to you, so don't expect to see any Correlations reported in your first 2 weeks using the app. If you want to analyze the data yourself, you can do this by clicking 'View Insights' on any graph on the Scores page.
Hyperio is free to download. Free users have full access to metabolism and cognition, and full access to Hyperio Insights (as far as it relates to these 2 aspects of their physiology). This means that if you just want to use the app to optimize your metabolism, you can do this for free! To analyze your testosterone, cortisol, and circadian rhythm, you must upgrade to Hyperio Premium for a small monthly subscription. Upgrading to Premium also allows you to follow Correlations and earn Awards for continued usage of the app.
Thank you for taking the time to read this and I'm happy to answer any questions you have.
Download link: Hyperio