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Health

19 claims2 moments1 on the cutting room floor

Lenny's Written Position

Environmental toxins like PFAS, phthalates, and microplastics are the trans fats of our generation, found in 92-97% of Americans' blood and linked to testosterone, anxiety, cancer, and fertility issues.

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The 80/20 of sleep health comes down to three things: exercise during the day, get morning sunlight, and optimize your sleep setup for no external light, quiet, low CO2, and cold temperatures.

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Most microplastics are inhaled rather than ingested via water or food, making air purification in your home and office a top priority for toxin mitigation.

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Plant protein powders are largely ineffective because they are not bioavailable and are often contaminated with high levels of pesticides, with one test finding glyphosate levels 1,000 times higher than recommended.

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The EU bans more than 1,300 chemicals and compounds that the US allows, because the FDA takes an assume-safe-until-proven-harmful approach versus the EU's precautionary do-no-harm approach.

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The key to beating burnout is to systematically design a career and lifestyle that make burnout structurally unlikely, rather than relying on resilience or stress management.

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Burnout conquerors treat wellness as non-negotiable professional infrastructure, with exercise routines more like professional athletes than typical tech workers.

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Burnout is organizational warfare, not a personal responsibility — free-pizza Fridays and free mental health sessions are band-aids that signal serious organizational dysfunction.

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Workplace anger most commonly arises when your expertise is challenged, your autonomy is threatened, your values are compromised, or your identity is dismissed, and it signals an unmet emotional need rather than being the problem itself.

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Anger manifests in two forms at work: hot anger (exploding outward with aggression and blame) and cold anger (withdrawing inward with shutdown and self-criticism), and both cause real costs if left unconscious.

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A four-step process can transform workplace anger into wisdom: recognize your alarm, do a U-turn to look inward, identify the unmet need, and choose a conscious response.

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In the past six months, every one of coach Natalie Rothfels' executive and co-founder clients has been vibrating with deep, persistent anger that was depleting their motivation and making them emotionally exhausted at work.

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Laughter alters brain chemistry by swapping cortisol with dopamine, oxytocin, and endorphins, which enhance learning, connection, and pleasure.

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Viewing your calendar as an energy management tool and mapping energy levels across the week reveals obvious killers like meeting-heavy Mondays and back-to-back meetings that cause progressive burnout.

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Tactical deep breathing with a 2:1 exhale-to-inhale ratio stimulates the parasympathetic nervous system and can calm you down before product reviews or after difficult meetings in as little as 20-30 seconds.

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Professionals should define their personal range of tolerance using three lists: intolerables to completely avoid, self-imposed boundaries that promote health, and a plan to flourish with items that put you in your optimal zone.

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Mind hours, the time your nervous system is preoccupied with work stress outside of office hours, are the most emotionally taxing part of career progression and most people underestimate how many they accumulate.

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Nearly 50% of tech professionals surveyed had thought about changing careers at least three times because it was not worth it, and another 50% had cried because of work at least twice.

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A career is better modeled as a series of S-curves stacked on top of each other, with acceleration phases followed by necessary recovery periods, rather than a single continuous upward trajectory.

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Podcast Moments

Naomi Gleit01:12:44
People are always like, 'What are you training for?' And I'm like, 'I'm training for life.' I have four musties: eat, sleep a long time, and exercise. Those are the things that I need in order to perform.

Meta’s Head of Product (and 29th employee) on working with Mark Zuckerberg, early growth tactics, why PMs are like conductors, and more | Naomi Gleit · Naomi Gleit

Jonny Miller00:00:00
Ideally, you want to notice when it's the feather and then make adjustments or shift then and not have to wait until you experience the full-blown pain of the dump truck, which unfortunately is what happens to a lot of people, especially when they experience burnout for the first time.

Managing nerves, anxiety, and burnout | Jonny Miller (Nervous System Mastery) · Jonny Miller

Cutting Room Floor

Guest insights on this topic that Lenny hasn't (yet) written about in his newsletters. Potential material for future posts.

Jonny MillerUnsynthesized
Ideally, you want to notice when it's the feather and then make adjustments or shift then and not have to wait until you experience the full-blown pain of the dump truck, which unfortunately is what happens to a lot of people, especially when they experience burnout for the first time.

Managing nerves, anxiety, and burnout | Jonny Miller (Nervous System Mastery) · Jonny Miller