Markus Pesonen

@coreyhainesco Awesome work! DM

I built a skill for Claude Code that designs email sequences — welcome series, onboarding flows, nurture campaigns, re-engagement drips. You tell it the goal and audience and it maps out the full sequence — timing, subject lines, body copy, CTAs, and the logic for when each email triggers. It knows that your welcome email should arrive immediately (not an hour later), that day 3 is when engagement drops, and that your case study email should come right before the upgrade ask. Every email has a specific job in the sequence. Most email sequences are either too aggressive or too passive. This one is calibrated to move people forward without burning them out. It's called /email-sequence and it's part of Marketing Skills — a free, open source collection of 32 marketing skills for AI agents like Claude Code, Cursor, and Codex.

@rrhoover @nikitabier oh this would be really great. is this already a reality?

You can now listen to articles on X. 🥰 (Likely niche) feature request for @nikitabier: Ability to play all my bookmarked and unread articles sequentially.

@bryan_johnson What you’re describing is cognitive sovereignty. This isn’t a habit problem. It’s a sovereignty crisis. AI filtration is one half. The other is training the nervous system to hold coherence under noise. agency > engagement

I did a 40 hr and then a 70 hr social media fast. I’ve come to believe that social media is pollution.  Not a vice or guilty pleasure. It’s closer to water toxins, air pollution and microplastics. Social media has been on my mind because I can feel how bad it is for me. For my health and agency. I am a professional rejuvenation athlete. For five years, I’ve engineered my life around biological renewal and the elimination of decay. After hundreds of experiments across food, sleep, exercise, therapies, and toxins, I’ve developed both data and intuition about what strengthens or degrades my system. I can viscerally feel that social media is bad for me.  It erodes my autonomy and increases cognitive entropy. Like other toxins, it accumulates. You can’t unsee or unfeel what you’ve consumed. It settles into mental tissue like heavy metals, producing chronic low-grade inflammation.  Evidence suggests even after you stop scrolling, attentional fragmentation and emotional priming persist. Your thoughts begin to mirror the algorithm’s incentives. Independent cognition quietly erodes and you don’t notice the loss. Time away and getting lost in deep focus is the only remedy. When something erodes your agency, the rational response is elimination. The problem is, elimination isn’t realistic. “Just put the phone down” is as practical as telling someone in 19th century London to stop breathing coal smoke. You need to know what’s happening in the world, be in touch with your friends and be part of the tribe. That necessity is what allows companies to harvest your emotions, intellect and time for their profit. You are their raw material they exploit. Then in an ironic twist, the system gets you to exploit yourself by engineering an environment where it takes more effort to stop than to continue scrolling.  Pollution exposure by default. What specifically makes social media toxic is that value and poison are inseparable by design.  You go to hear from friends and you leave an hour later absorbed in outrage that serves no biological interest of yours. The water is real. The lead is in the pipes. The performance metrics (likes, views, etc.) bleed you of independent thought. They create quantified social proof, triggering ancient hierarchy reflexes. You no longer evaluate signal from noise; the engagement metrics do it for you. Like all toxins, the damage is cumulative. We live inside the exposure long enough that it feels normal.  The 40 and 70 hour social media fasts did that for me. Gave me just enough separation to feel and diagnose the poison. The obviousness of it feels like when I went to India and saw their humanitarian crisis of air pollution which no one sees anymore. So what do we do? Neither platforms nor individuals are likely to change on their own. AI may be the countermeasure. An AI layer between you and the feed. Filtering rage, removing vanity metrics and translating sensationalism into calm, factual language. Preserving signal and eliminating noise. I want social media to become a longevity intervention, not a longevity threat. I never want to see the raw feed. I want an AI agent to read it for me, strip the engagement metrics that hijack my judgment, filter the rage, and return only what I actually came for. Every generation faces its pollutants. When cholera spread through London's water, the answer wasn't telling people to drink less. It was building filtration. The same logic applies here. Best next move is to design the filter to avoid being the raw material.

Focus is a byproduct of regulation, not effort When the body feels safe → cognition expands When the body is tense → attention fragments

@maxmarchione 11. Chronic nervous system dysregulation quietly drives metabolic, digestive, cardiovascular, and mental dysfunction.

10 things about health I wish I knew 10 years ago: 1. Mold is in most homes and harms health 2. Most people are vitamin D deficient 3. Fix your metabolism at the root cause (not by just avoiding carbs) 4. Heart disease is completely preventable 5. Most doctors don't know what you should do for your health 6. Most people have bad gut health. Fix it 7. Mouth breathing can increase disease & decrease IQ 8. There's BPA in cans, receipts, coffee cups, tea bags 9. All 'diets' are bullshit. Everything in moderation 10. Walking is incredible to improve mitochondrial efficiency. Mitochondria are everything What would you add?

@bryan_johnson Flying is the best moment for fasting

Jet lag is a metabolic stressor. Traveling 16 time zones significantly weakened my blood sugar control. + Mean glucose: 9.7% increase + Variability (SD): 15.8% increase + >100 mg/dL: 122% increase + >140 mg/dL: 0 to 1.37% (19 min from exercise)

@karpathy @tferriss @dwarkesh_sp Every interaction is and a co-creation and every memory recreation. It’s not what they wrote but what it makes you think.

@dwarkesh_sp Most people misunderstand books as data for pertaining when it’s more a set of prompts for synthetic data generation.

Just did this with a couple of friends irl. Feels like I've properly read a book for the first time in my life. We got a much better sense of how all the motivating questions and pieces of evidence actually fit together in the thesis. Asking each other very basic questions (and then trying to answer them) lead us to realize how murky our map of the terrain really was. And how confused our original interpretation of seemingly simple concepts was.

@AlexHormozi noise pollution is what sewage was in the 1600s — a public crisis we barely notice until it makes us sick

Best $5000 you'll ever spend. Sound proof your entire office. Make it so quiet you can hear your heartbeat. If kids next to noise polution achieve consistently lower grades than those in quiet areas, no one is immune. Noise destroys.

@hubermanlab @StanfordMed Awesome read, we have to cure brain rot

Awesome to see the resurgence in Dopamine Nation from my colleague @StanfordMed Dr Anna Lembke MD. As she explains, once the kinetics of pursuit-pleasure and pain are understood, people can make far better choices about their time & be genuinely happier.

@tobi Spatial Audio experience with the most comfortable 100% blackout eye mask. Perfect for teens interested in immersive experiences. Side effects include reduced anxiety and increased creativity (peer review study): olospace.myshopify.com/products/olo-i…

Best gift ideas for curious teens? Drop links. Ideally Shopify ones ✌️

@maxmarchione Spatial audio that regulates your nervous system faster and easier than anything else. Effect of coffee and meditation combined

@MarkusPesonen What’s this?

damn I didn’t sleep last night so over-caffeinated today and can’t sleep again tonight. founder mode is tough. stack to solve: - 400mg theanine - 250mg GABA - 1mg melatonin - 500mg magnesium - 4g glycine super safe, very effective

@ivanhzhao @andyorsow Allow longer paste to Notion

@andyorsow Hi would love to improve your Notion experience. Could you say more where you copy-paste from/to?

I regret to inform all of you that notion is still terrible

@winterrose Dm

got stuck in sf DM me partifuls!

@hubermanlab Faith

What protocol am I explaining?

@alexhalliday AIROPS

@simmo9833 @bryan_johnson Your bro’s are advanced!

@MarkusPesonen @bryan_johnson step 5 so true - all the bro's at the sauna in my gym are doing exactly that

Most people sauna wrong. That’s ok, they’re trying. Here’s how to do it correctly for longevity. We measured vascular health, blood markers, fertility health, sleep, environmental toxins, and even a first in world demonstration of removing microplastics from testicles.

@LifeAlgoMind @bryan_johnson Spot on! And the cool down gives another different moment to appreciate presence

@MarkusPesonen @bryan_johnson The meditative aspect is underrated. Sauna forces you into the present moment - can't escape into your phone or distraction when your body demands full attention. Perfect reset from the mental noise.

@maxmarchione Let’s have a coffee tomorrow

arriving in nyc now. I get so so so excited every time I get to this city