Bryan Johnson, the 48-year-old centimillionaire and nocturnal-erection-measuring longevity influencer, sits in the lotus position on a white loveseat, his knees grazing the knees of Kate Tolo, his 29-year-old business partner and, today, his spiritual guide through his psychedelic mushroom trip. "My body feels so nimble and supple and loose," he says. "Everything feels youthful."

Like thousands of people watching the livestream on X, YouTube, or Instagram, I spent a portion of my Sunday watching "Bryan Johnson Takes Magic Mushrooms," a new entry into the Thanksgiving family entertainment canon in which Johnson took 5.24 milligrams of mushrooms, a near-heroic dose, "for science." I watched the entire five-and-a-half-hour production, "for journalism," to document a new phase in tech elites'

See Full Page