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  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    I've instructed my chef to make meals that are exactly 700 calories. But they're more than 700 calories. You know how I know? My resting heart rate is elevated by 3 beats per minute. I'm 1,000+ reps (days) in knowing how food impacts my heart rate.

    Apr 5, 2026 184 6 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @maximumpain333 This advice is dangerous. Chronic sleep fragmentation raises cortisol, accelerates epigenetic aging, and impairs glucose regulation. Insomnia is associated with depression, metabolic disease, and early mortality.

    Apr 5, 2026 131 3 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    ok I'm going to turn this into an experiment.

    > measure turf toxin levels: PFAS, heavy metals, PAHs
    > measure same toxins in my body
    > compare before/after turf removal
    > document remediation process

    13k artificial turf fields in US. My kids played sports on them.

    Apr 5, 2026 27 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @pitdesi I need to compile a list of things we already track which make me die, the number is surprisingly big

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

    @Liv_Boeree now I want to go down this rabbit hole and quantify the damage

    Apr 5, 2026 7 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @davidgobaud that’s a good idea, image based toxin detection

    Apr 5, 2026 2 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @D4RW1NEXE I’m going to test this turf and get a chemical assessment and also test my biomarkers before and after, turning this into an experiment

    Apr 5, 2026 15 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @KarnHall if only I’d listened…

    Apr 5, 2026 28 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @tunguz it is a lot of fun though and as much as these discoveries are painful they do are joyful to clean up

    Apr 5, 2026 22 0 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @ElishaDLong I’m irredeemably doomed to this

    Apr 5, 2026 29 0 View on X
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