[GUEST ACCESS MODE: Data is scrambled or limited to provide examples. Make requests using your API key to unlock full data. Check https://lunarcrush.ai/auth for authentication information.]  Bryan Johnson [@bryan_johnson](/creator/twitter/bryan_johnson) on x 627.3K followers Created: 2025-07-15 20:12:16 UTC Here is what I learned after XX sessions of 200F, XX min, dry sauna: Impressive vascular and detox benefits My central pulse wave and pressure measurements show significant improvement in endothelial function and arterial elasticity and compliance, ranging from XX% to 50%. This has effectively reduced my general arterial and vascular age by approximately XX years. After XX sessions, most of my vascular function markers now align with those of a healthy 20-year-old. This progress is ongoing, as evidenced by my new all-time record brachial blood pressure reading of 87/49 post-sauna session today. My data also strongly suggest that sauna sessions effectively detoxify the body. After just XX sessions, my urine toxin panel was the cleanest I've ever recorded since I began testing. Specifically: + Three previously concerning exposures were completely eliminated. + Three other exposures were reduced to within normal ranges. + Only one moderately elevated toxin remained out of a panel of XX. Definitely ice the balls:+ XX sessions with an icepack on balls: +57% increased total motile count, +26% increased total concentration XX sessions with uniced balls: - XX% decreased total motile count, -X% decreased of total concentration More biomarkers coming I am taking a bloodpanel this week, at XX sessions. So stay tuned as more biomarkers are coming including Vascular biomarkers to confirm the central pulse measurements. + full hormone panel + metabolic markets + brain health markers + speed of aging + and more Not all saunas are made equal, evidence points at the protocol we've deployed. Dry sauna sessions at high temperatures (≈80-100 °C) and longer sessions (>19 min) have the strongest and longest-running evidence for lowering resting blood pressure, improving arterial elasticity and, over decades, cutting cardiovascular and all-cause mortality. This is what makes dry sauna unique, and very likely superior to wet (steam bath) and infrared saunas. By heating up your skin way faster than your core, dry hot sauna (Finnish sauna) flips your core→skin temperature gradient, eliciting the following hormetic benefits. Enhanced blood flow: the heart pumps up to XX% more blood, similar to intense aerobic exercise (zone 2-3). Increased sweating for detoxification: to maintain a stable core temperature, the skin produces 0.6-1 liter of sweat per hour, facilitating significant detoxification. Improved heat tolerance: the body becomes better at handling heat, leading to a lower core body temperature (offering metabolic advantages) Safe activation of heat shock proteins: The skin experiences substantial heat shock protein activation, while a modest 1°C increase in core temperature is sufficient to activate these proteins without the risk of hyperthermia. Extended Exposure at Higher Temperatures: Dry saunas are more tolerable for longer durations and at higher temperatures, maximizing the benefits. @chamath XXXXXXX engagements  [Post Link](https://x.com/bryan_johnson/status/1945214857244205341)
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Bryan Johnson @bryan_johnson on x 627.3K followers
Created: 2025-07-15 20:12:16 UTC
Here is what I learned after XX sessions of 200F, XX min, dry sauna:
Impressive vascular and detox benefits My central pulse wave and pressure measurements show significant improvement in endothelial function and arterial elasticity and compliance, ranging from XX% to 50%. This has effectively reduced my general arterial and vascular age by approximately XX years.
After XX sessions, most of my vascular function markers now align with those of a healthy 20-year-old. This progress is ongoing, as evidenced by my new all-time record brachial blood pressure reading of 87/49 post-sauna session today.
My data also strongly suggest that sauna sessions effectively detoxify the body.
After just XX sessions, my urine toxin panel was the cleanest I've ever recorded since I began testing.
Specifically:
- Three previously concerning exposures were completely eliminated.
- Three other exposures were reduced to within normal ranges.
- Only one moderately elevated toxin remained out of a panel of XX.
Definitely ice the balls:+ XX sessions with an icepack on balls: +57% increased total motile count, +26% increased total concentration
XX sessions with uniced balls: - XX% decreased total motile count, -X% decreased of total concentration
More biomarkers coming I am taking a bloodpanel this week, at XX sessions. So stay tuned as more biomarkers are coming including Vascular biomarkers to confirm the central pulse measurements.
- full hormone panel
- metabolic markets
- brain health markers
- speed of aging
- and more
Not all saunas are made equal, evidence points at the protocol we've deployed.
Dry sauna sessions at high temperatures (≈80-100 °C) and longer sessions (>19 min) have the strongest and longest-running evidence for lowering resting blood pressure, improving arterial elasticity and, over decades, cutting cardiovascular and all-cause mortality.
This is what makes dry sauna unique, and very likely superior to wet (steam bath) and infrared saunas.
By heating up your skin way faster than your core, dry hot sauna (Finnish sauna) flips your core→skin temperature gradient, eliciting the following hormetic benefits.
Enhanced blood flow: the heart pumps up to XX% more blood, similar to intense aerobic exercise (zone 2-3).
Increased sweating for detoxification: to maintain a stable core temperature, the skin produces 0.6-1 liter of sweat per hour, facilitating significant detoxification.
Improved heat tolerance: the body becomes better at handling heat, leading to a lower core body temperature (offering metabolic advantages)
Safe activation of heat shock proteins: The skin experiences substantial heat shock protein activation, while a modest 1°C increase in core temperature is sufficient to activate these proteins without the risk of hyperthermia.
Extended Exposure at Higher Temperatures: Dry saunas are more tolerable for longer durations and at higher temperatures, maximizing the benefits.
@chamath
XXXXXXX engagements
