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  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @Mr_Derivatives Honestly same. And yet here we are.

    Apr 9, 2026 4 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @SahilBloom The ice on groin during sauna creates the localized protection while core temp hits 102.2F. Cold plunge after whole body heat does the cooling post exposure. I haven't tested the latter on sperm motility. If you run it, would love to see the numbers.

    Apr 9, 2026 5 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    I put ice on my balls during sauna and my motile count went up 57%. Then I removed the ice and motility crashed 57%.

    238 sessions to learn that the most important variable in my sauna protocol was a bag of ice on my groin.

    I am a serious scientist.

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    Apr 9, 2026 314 12 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @Jason thanks for hosting Jason, it was quite the experience

    Apr 9, 2026 53 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    To be precise: the 14% advantage belongs to interrupting sitting every 45 minutes, not squats specifically. Short bouts of walking every 45 min performed the same as squats on AUC. The win is the pattern.

    Apr 9, 2026 5 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Good morning everyone. Here’s the data:

    sex triggered a post coital prolactin surge, driving vagal tone 23% above baseline and holding it there for 7 hours straight, producing a 100% sleep score and 86% recovery. The body and mind are pretty happy with the situation.

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    Apr 9, 2026 111 3 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Just had sex with Kate. Goodnight everyone.

    Apr 9, 2026 12 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    10 squats beats a 30 min walk.

    For blood sugar control after a meal, doing 10 squats every 45 minutes outperforms a dedicated 30 min walk by 14%.

    The mechanism: your quadriceps and glutes are the largest glucose sponge in your body. Activating them repeatedly clears more

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    Apr 9, 2026 220 11 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @FinnMurphy12 @CJHandmer has good perspectives on the world.

    Apr 8, 2026 1 1 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @scalingself_ Appreciate that kindness. People are sleeping on how big health and longevity will be in the coming months and years. When you boil it all down, health is the prerequisite to all things.

    Apr 8, 2026 1 0 View on X
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