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Lenny's Reads

Lenny Rachitsky
Lenny's Reads
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  • A builder’s guide to living a long and healthy life
    If you’re a premium subscriber, add the private feed to your podcast app at add.lennysreads.comIf you’re trying to feel better, build longer, and avoid quietly poisoning yourself along the way, this episode’s for you.After a run of injuries, weird labs, and a “half-man/half-plastic” toxin screen, I went deep on cleaning up my life. Enter: Justin Mares, founder/operator (Kettle & Fire, Perfect Keto, Surely, Truemed), and meticulous health nerd who has spent hundreds of hours testing what’s actually worth buying.In this episode, we walk through Justin’s guide for safer, higher-quality living so you can stay healthy, perform your best, and continue to build amazing products.In this episode, you’ll learn:• The 80/20 of great sleep (and why temperature control and magnesium often matter most)• What to wear (and avoid) to reduce PFAS, phthalates, and dye exposure on skin• A sourcing playbook for nutrient-dense, low-toxin food• Supplements that you actually need and why• Practical toxin-mitigation at home: air, water, lighting, EMFs, kitchens, and cleaning• Low-effort swaps for everyday products (deodorant, soaps, skincare, blue-light blockers)References:• Andrew Huberman: https://www.linkedin.com/in/andrew-huberman/• Bryan Johnson: https://x.com/bryan_johnson• Chemicals in Textiles: https://www.kemi.se/en/publications/reports/2014/report-6-14-chemicals-in-textiles• How to Prevent & Treat Colds & Flu: https://www.hubermanlab.com/episode/how-to-prevent-treat-colds-flu• Justin Mares: https://www.linkedin.com/in/justinmares/• Levels: https://www.levelshealth.com/• Rhonda Patrick: https://www.linkedin.com/in/patrickrhonda/• Surely: https://drinksurely.com/• The Great American Poisoning: https://justinmares.substack.com/p/the-great-american-poisoning• Tim Ferriss: https://www.linkedin.com/in/timferriss/• Truemed: https://www.truemed.com/• What are EMFs?: https://andybromberg.com/rational-guide-to-emfsSleep:• Avocado mattress: https://www.avocadogreenmattress.com/• Coyuchi sheets: https://www.coyuchi.com/collections/sheet-sets• Eight Sleep: https://www.eightsleep.com/• Essentia mattress: https://myessentia.com/• Hästens: https://hastens.com/us/• Naturepedic mattress: https://www.naturepedic.com/• Woolshire pillow: https://thewoolshire.com/products/wool-pillowClothing:• Caraway: https://www.carawayhome.com/• Faherty: https://fahertybrand.com/• Industry of All Nations: https://industryofallnations.com/collections/underwear• Nads: https://nadsunder.com/• Pact: https://wearpact.com/• Paka: https://www.pakaapparel.com/• Wax London: https://waxlondon.com/collections/organic-cottonFood:• Beeswax wraps: https://www.amazon.com/Bees-Wrap-Assorted-Sustainable-Alternative/dp/B0126LMDFK• Force of Nature beef: https://forceofnature.com/products/regenerative-beef-ancestral-blend• Groundwork coffee: https://www.groundworkcoffee.com/collections/regenerative-organic-certified• Jacob protein bar: https://eatjacob.com/• Kettle & Fire bone broth: http://kettleandfire.com/• Maui Nui meat sticks: https://mauinuivenison.com/products/snack-membership• Maui Nui Organ Blend: https://mauinuivenison.com/products/organ-blend-supplement• Radius: https://www.eatradius.com/• White Oak Pastures meats: https://whiteoakpastures.com/Supplements:• AHCC: https://www.amazon.com/Premium-Kinoko-Platinum-AHCC-Supplement/dp/B00HG0YZMG/ref=sr_1_6_pp• Astaxanthin: https://www.amazon.com/Pure-Synergy-SuperPure%C2%AE-Astaxanthin-Antioxidant/dp/B07KX3NZJ5/• Equip protein: https://equipfoods.com/• Lineage: https://lineageprovisions.com/products/creatine-monohydrate• Momentous creatine: https://www.livemomentous.com/products/creatine-monohydrate• Momentous magnesium L-threonate: https://www.livemomentous.com/products/magnesium-threonate• Orgain: https://www.orgain.com/• Perfect Keto: https://shop.perfectketo.com/products/grass-fed-collagen-with-mct• Thorne B complex: https://www.amazon.com/Thorne-Methyl-Guard-Plus-methylation-homocysteine/dp/B00O5AHC4S/• Toku: https://tokuhealth.com/• Viraldine: https://www.amazon.com/VIRALDINE-Povidone-Iodine-Designed-Congestion-applications/dp/B0CTWWS1DKToxin mitigation:• Aquasana: https://www.aquasana.com/• Circadian bulbs: https://thehealthyhome.shop/collections/lights• Inuspheresis: https://www.inuspheresis.com/• Jaspr: https://jaspr.co/• Lightwork: https://lightworkhome.com/• Ophora: https://www.ophorawater.com/whole-home/• PowerScale: https://www.amazon.com/Powerscale-Generator-Vegetable-Multipurpose-Pesticides/dp/B0D8DM18HV/ref=sr_1_17• Proxima: https://www.proxima.health/• PuroAir: https://getpuroair.com/?utm_source=shop_truemed• Renovera: https://www.amazon.com/Renovera-Vegetable-Infant-Friendly-Powdered-Produce/dp/B07R3W8H41/• Rorra: https://rorra.com/products/countertop-system?utm_source=shop_truemed• Smart plug: https://www.amazon.com/Govee-WiFi-Outlet/dp/B08731J1L4/ref=sr_1_6• Teakhaus: https://teakhaus.com/collections/cutting-boardsEveryday items:• Alitura Meteorite scrub: https://alitura.com/collections/skincare/products/the-meteorite-facial-scrub?selling_plan=4148527355• Alitura Pearl cleanser: https://alitura.com/collections/skincare/products/alitura-pearl-cleanser• Branch Basics: https://branchbasics.com/• Chroma blue-light glasses: https://getchroma.co/collections/blue-light-blocking-glasses• Dr Bronner's soaps: https://www.drbronner.com/• Kari Gran sunscreen: https://karigran.com/products/essential-spf• Mirror Skin serum: https://mymirrorskin.com/• Native deodorant: https://www.nativecos.com/• Primally Pure deodorant: https://primallypure.com/collections/deodorant• Ra Optics blue-light glasses: https://raoptics.com/• Shwally tallow balm: https://www.shwallyhome.com/collections/our-balms/products/shwally-face-and-body-balm• Read the newsletter: https://www.lennysnewsletter.com/p/a-builders-guide-to-living-a-long: https://www.lennysnewsletter.com/p/a-builders-guide-to-living-a-longSubscribe• YouTube: https://www.youtube.com/@lennysreads• Apple: https://podcasts.apple.com/us/podcast/lennys-reads/id1810314693• Spotify: https://open.spotify.com/show/0IIunA06qMtrcQLfypTooj• Substack: https://lennysreads.com/Follow Lenny• Twitter: https://twitter.com/lennysan• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/• Podcast: https://www.youtube.com/@lennyspodcastAboutWelcome to Lenny's Reads, where every week you’ll find a fresh audio version of my newsletter about building product, driving growth, and accelerating your career, read to you by the soothing voice of Lennybot. To hear more, visit www.lennysnewsletter.com
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  • Everyone should be using Claude Code more
    If you’re a premium subscriber, add the private feed to your podcast app at add.lennysreads.comClaude Code isn't just for developers - it’s actually one of the most underrated AI tools for non-technical people.In this episode, I share 50 ways to use it: decluttering your hard drive, enhancing images, synthesizing customer calls, drafting presentations, and more, all collected from 500+ stories shared by this community. If you've been sleeping on Claude Code, then this episode is your wake-up call.In this episode, you’ll learn:• Exactly how to install and launch Claude Code on Mac and Windows• Five ways I used it this month• 45 creative non-technical workflows, from file organization, to lead discovery, roadmap support, and social listening• Ten more detailed advanced Claude Code use casesReferences:• Adobe: https://www.adobe.com/• Apple: https://www.apple.com/• arXiv: https://arxiv.org/• Asana: https://asana.com/• Brex: https://www.brex.com/• ChatGPT: https://chatgpt.com/• Claude Code: https://www.claude.com/product/claude-code• Clay: https://clay.com/• Cursor: https://cursor.sh/• Dan Shipper: https://www.linkedin.com/in/danshipper/• Docker: https://www.docker.com/• Fireflies: https://fireflies.ai/• Gemini: https://gemini.google.com/• Git: https://git-scm.com/• GitHub: https://github.com/• Gmail: https://mail.google.com/• Homebrew: https://brew.sh/• Intercom: https://www.intercom.com/• Jira: https://www.atlassian.com/software/jira• Linear: https://linear.app/• Mercury: https://mercury.com/• Microsoft: https://www.microsoft.com/• Notion: https://www.notion.com/• OpenAI: https://openai.com/• Playwright: https://playwright.dev/• Reddit: https://www.reddit.com/• Slack: https://slack.com/• VS Code: https://code.visualstudio.com/• Warp: https://www.warp.dev/• X (Twitter): https://x.com/Subscribe to Lenny’s Newsletter• Substack: https://www.lennysnewsletter.com/subscribeRead the post • Substack: https://www.lennysnewsletter.com/p/everyone-should-be-using-claude-codeSubscribe to Lenny's ReadsYouTube: https://www.youtube.com/@lennysreads• Apple: https://podcasts.apple.com/us/podcast/lennys-reads/id1810314693• Spotify: https://open.spotify.com/show/0IIunA06qMtrcQLfypTooj• Substack: https://lennysreads.com/Follow Lenny• Twitter: https://twitter.com/lennysan• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/• Podcast: https://www.youtube.com/@lennyspodcast To hear more, visit www.lennysnewsletter.com
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  • Introducing the GAIN framework for feedback: an evidence-based approach to giving feedback that people love, appreciate, and act on
    If you’re a premium subscriber, add the private feed to your podcast app at add.lennysreads.comIf feedback is a gift, why does it often feel so difficult?In this episode, we break down executive coach Jack Cohen’s evidence-based GAIN framework - a simple, memorable way to give feedback that actually lands.Whether you manage a team or want to nudge a peer, this is a step-by-step playbook for feedback that strengthens relationships, drives behavior change, and leaves people feeling supported and motivated to change.In this episode, you’ll learn:• Why we struggle to give tough feedback• How “start with the Goal” flips defensiveness into motivation• Why great feedback names Actions and Impacts, not judgments• How acknowledging your contribution disarms resistance• Scripts that make tough conversations feel collaborative• A framing that helps preserve ambition and psychological safety• A Stanford-tested “wise feedback” sentence that boosts follow-through• The 3 Ws framework to lock in change• A live case study: a VP uses GAIN to unwind a founder’s micromanaging habitReferences:• Amy Edmondson: https://www.linkedin.com/in/amycedmondson/• “Breaking the cycle of mistrust: Wise interventions to provide critical feedback across the racial divide”: https://psycnet.apa.org/record/2013-28213-001• Brian Martin: https://www.linkedin.com/in/brian-e-martin-50575a2b/• Carol Dweck: https://www.linkedin.com/in/carol-dweck-4618236/• Cycle of conflict or cycle of connection?: https://speakerdeck.com/jackcohen/cycle-of-conflict-or-cycle-of-connection• FeedbackGPT: https://maven.com/p/6f79f8/feedback-gpt-give-feedback-people-thank-you-for• “Framing for Learning: Lessons in Successful Technology Implementation: https://www.notion.so/27d43d3a2709810a9f8de040eea2b01a?pvs=21”• How to become a supermanager with AI: https://www.lennysnewsletter.com/p/how-to-become-a-supermanager-with• How to motivate your team for free: https://actionablewisdom.beehiiv.com/p/how-to-motivate-your-team-for-free• Jack Cohen: https://www.linkedin.com/in/jackadamcohen/• John Gottman: https://www.gottman.com/author/john-gottman-ph-d/• ManagerGPT: The AI Tools and Human Systems to Scale Yourself and Your Team Fast: https://maven.com/actionablefeedback/managergpt• Nischal Nadhamuni: https://www.linkedin.com/in/nishchaln/• Nonviolent Communication (book): https://www.amazon.ca/Nonviolent-Communication-Language-Life-Changing-Relationships/dp/189200528X• “On the elicitation of preferences for alternative therapies”: https://pubmed.ncbi.nlm.nih.gov/7070445/• “Praise for intelligence can undermine children's motivation and performance: https://pubmed.ncbi.nlm.nih.gov/9686450/”• Radical Candor (book): https://www.amazon.ca/Radical-Candor-Kick-Ass-Without-Humanity/dp/1250103509• Satya Nadella: https://www.linkedin.com/in/satyanadella/• Sheryl Sandberg: https://www.linkedin.com/in/sheryl-sandberg-5126652/• Slack: https://slack.com/• Stanford University: https://www.stanford.edu/• Tal Raviv: https://www.linkedin.com/in/talsraviv/• “The effectiveness of the “But-you-are-free” technique: Meta-analysis and re-examination of the technique: https://www.researchgate.net/publication/344807911_The_effectiveness_of_the_But-you-are-free_technique_Meta-analysis_and_re-examination_of_the_technique”• The Founder’s Dilemmas: Anticipating and Avoiding the Pitfalls That Can Sink a Startup (book): https://www.amazon.com/Founders-Dilemmas-Anticipating-Foundation-Entrepreneurship/dp/0691158304• The GAIN Feedback Template: https://maven.com/p/ad08cc/the-gain-feedback-template• Read the newsletter: https://www.lennysnewsletter.com/p/introducing-the-gain-framework-forSubscribe• YouTube: https://www.youtube.com/@lennysreads• Apple: https://podcasts.apple.com/us/podcast/lennys-reads/id1810314693• Spotify: https://open.spotify.com/show/0IIunA06qMtrcQLfypTooj• Substack: https://lennysreads.comFollow Lenny• Twitter: https://twitter.com/lennysan• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/• Podcast: https://www.youtube.com/@lennyspodcastAboutWelcome to Lenny's Reads, where every week you’ll find a fresh audio version of my newsletter about building product, driving growth, and accelerating your career, read to you by the soothing voice of Lennybot. To hear more, visit www.lennysnewsletter.com
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  • How to get the most out of your product pass, part 1
    If you’re a premium subscriber, add the private feed to your podcast app at add.lennysreads.comIf you’ve been wondering how to get real value from the subscriber product pass, this episode is for you. I break down exactly how I’m using eight of the tools today - from what they’re great at, what surprised me, and where they slot into a modern PM’s stack. Consider this your field guide to turning these tools into real workflow improvementsIn this episode, you’ll learn:• What each tool actually does for PMs (beyond the tagline): where it shines vs. falls short• How to vibe code entire apps with Replit, including auth, DB, testing, and auto-fix loops• Why Warp turns your terminal into an agentic sidekick• Linear’s sweet spot for teams• When voice beats typing: workflows where Wispr Flow is faster and more accurate• Rapid content creation with Gamma 3.0, including decks, landing pages, and shareable summaries• Fast prototyping with Magic Patterns using your own component library• How non-video-people ship great video with Descript + Underlord• Smart real-life examples of how PMs and teams are using each tool right nowReferences:• Read the post: https://www.lennysnewsletter.com/p/how-to-get-the-most-out-of-your-product• A peek at an upcoming episode on evals: https://the-rise-of-ai-evals-q62i0s7.gamma.site/• Announcing 15+ free premium tools available exclusively to paid annual subscribers: https://www.lennysnewsletter.com/p/productpass• Ben Horowitz’s episode on leadership: https://gamma.app/docs/10-Hard-Truths-That-Built-Billion-Dollar-Companies-onh55jsg26xrzp5• Brendan Foody’s story of Mercor: https://ai-revolutions-hidden-bo-3k6n3li.gamma.site/• Creating a unique resume: https://suchita-kaundin-bsb2sbo.gamma.site/• Ethan Smith’s episode on AEO: https://gamma.app/docs/Mastering-Answer-Engine-Optimization-n4gxgak9z9tpzhc• Lenny’s product pass: https://lennysproductpass.com/• Turning PRDs into decks: https://x.com/clairevo/status/1968002491724988923• Yoto: https://us.yotoplay.com/Tools + use-case examples:Descript: https://descript.com/lenny• Creating ads: https://www.youtube.com/watch?v=SvBGR5cSeNw• Creating avatar-based demos: https://www.linkedin.com/posts/burkhauser_guys-now-on-descript-you-can-instantly-create-activity-7320888554761453568-Eex_• Adding big juicy text to videos: https://youtube.com/shorts/phEBSCJP8xw• Creating a rough cut with AI: https://www.youtube.com/shorts/RtC7_wQ1Arg• Creating YouTube Shorts: https://www.youtube.com/watch?v=8rXZkt6YkZw• Underlord example: https://www.linkedin.com/posts/fatemeh-alavizadeh_ever-wonder-how-ai-actually-thinks-about-activity-7350929550232444928-fc6sGamma: https://gamma.app/partners/lenny• Gamma 3.0: https://x.com/thisisgrantlee/status/1967943621782413388• Generating custom decks for each sales outreach: https://www.linkedin.com/posts/yonathan-cohen_gamma-30-just-dropped-i-built-a-29-reply-activity-7373718410439942144-sKqM/• Creating landing pages: https://www.linkedin.com/posts/charlie-hills_how-to-make-a-landing-page-in-5-minutes-activity-7321473049843621888-BTLe/• Turning meeting notes into a deck and follow-up email: https://x.com/riyazmd774/status/1967978262015160802• The story of Gamma: https://www.nytimes.com/2025/02/20/technology/ai-silicon-valley-start-ups.html• Turn Granola notes into presentations with Gamma: https://zapier.com/templates/details/meeting-notes-to-presentations-granola-gammaLinear: https://linear.app/• Claire at ChatPRD on building an agent in Linear: https://linear.app/integrations/chatprd• How Commure is building dashboards to monitor their team’s progress: https://linear.app/now/commure-dashboards in Linear• Linear’s secret to building beloved B2B products with Nan Yu (their Head of Product): https://www.youtube.com/watch?v=nTr21kgCFF4• How Linear uses Linear to manage their own customer feedback: https://linear.app/now/how-we-think-about-customer-experience-at-linearMagic Patterns: https://magicpatterns.link/lpp1• Copy-and-pasting PRDs, creating a Magic Patterns prototype, and then: https://magicpatterns.link/llp1x sharing with engineering• Creating personalized customer demos: https://magicpatterns.link/lpp1lu• Skipping Figma entirely: https://magicpatterns.link/llp1jh when prototyping• Magic Patterns tutorials: https://www.magicpatterns.com/docs/documentation/ai-prototyping-course/introductionMobbin: https://mobbin.com/lenny• Copy-and-pasting best-in-class flows into your Figma: https://youtu.be/E4idM0hC_AY?si=tJA95mUdzSmya0Wa&t=1537• Designing a viral app: https://youtu.be/T64X2GUoDwc?si=8f98NKkKPygr9QHS&t=360• Elevating your design taste: https://youtu.be/8mMH6Pq8qnE?si=xCt-KLIZsOhxrV-v&t=533• Getting design inspiration: https://www.instagram.com/reel/C3px5ESAwxA/• Studying in the best way: https://x.com/rexan_wong/status/1967789508717650388Replit: https://replit.com/?utm_source=lenny&utm_medium=lenny&utm_campaign=v2• Building a fully featured website for Saastr: https://x.com/jasonlk/status/1967408276825575753• Building a social networking platform (in 193 minutes): https://x.com/anthropiast/status/1966109218479714593• Coming up with startup ideas: https://x.com/daniel_mac8/status/1966260595143094534• Vibe-coding automations: https://x.com/omarsar0/status/1966949907149058551• Taking on Upwork projects: https://x.com/niconley/status/1966505076849074618Warp: http://go.warp.dev/lenny• How Warp helps a dad teach his kids how to build websites: https://x.com/some_user123/status/1950443062016041377• Building a Strava clone: https://youtu.be/cmHheGcDWTQ• Converting MRI imaging files to JPEGs: https://x.com/aaronwhite/status/1958281839333794057?s=46• Warp tutorials: https://warp.dev/universityWispr Flow: https://wisprflow.ai/• Doctors transcribing their notes: https://x.com/RutaB_/status/1956099269544567236• Slow typers speeding up their workflows: https://x.com/rywiggs/status/1937991165217017879• Talking to chatbots: https://x.com/MatthewGattozzi/status/1967952481419403609• Vibe coding: https://x.com/tankots/status/1891138380404060298• Writing: https://x.com/deedydas/status/1930130567649210879 This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.lennysnewsletter.com/subscribe
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  • How to develop product sense
    If you’re a premium subscriberAdd the private feed to your podcast app at add.lennysreads.comIn this episode, we unpack the elusive skill of product sense: what it really means, why it matters, and exactly how to build it. With hard-earned wisdom from Jules Walter (Slack, YouTube), we go beyond vague instincts and into concrete habits that sharpen your intuition and creativity as a product builder.Listen now: YouTube | Apple | SpotifyIn this episode, you’ll learn:* Why product sense isn’t magic: it’s a muscle you can train* How to build product sense by developing deeper user empathy* Why watching real users interact with products sharpens your intuition* How to reverse-engineer everyday products to uncover what makes them work* How creativity plays a key role in building great products* What you can learn by studying how top product thinkers make decisions* Why staying curious about new technology trends fuels innovation* How to tell if your product sense is actually improving over timeReferences:* A comprehensive survey of Product Management* Anthropic* Are You Solving the Right Problems?* Balaji Srinivasan* Bangaly Kaba* Braze* Camille Edwards* Cash App* Carta* Courtney Lessard* David Lieb* Elad Gil* Erin Teague* How to Do a Product Critique* How to Get Startup Ideas* Inspired* Intro to the Design of Everyday Things* Jules Walter* Julie Zhuo* Lawrence Ripsher* Marty Cagan* Naval Ravikant* Paul Graham* Rahul Vohra* Shreyas Doshi* Slack* Stewart Butterfield* Stripe* Superhuman* Textract (Amazon)* The First Secret of Great Design* Thomas Wedell-Wedellsborg* Todd Sherman* Tony Fadell* Uber* Venmo* Why now This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit www.lennysnewsletter.com/subscribe
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