Not the young bone marrow in his joints. Not nine and a half thousand minutes in an oxygen chamber. Not his son's plasma. A sauna. Bryan Johnson, Don't Die.

It's almost like a Michelin pastry chef who, in the end, realises his favourite food is toast. So, biohackers or grandma: who does the sauna right?

His protocol: ninety-three degrees, twenty minutes, every day, ice on his head and ice lower down. Then he swallowed a thermometer pill. To reach the heat he was chasing, it took thirty-one minutes. After more than two hundred sessions, he wrote that he had likely never reached it. And his rule: no cold plunge after. The part Finns like best.

The stones don't know who is a millionaire. His number one protocol of the year. In Finland, it is called Saturday.

One man's experiment, not advice. Feel dizzy or unwell? Leave the heat. Drink water.

Sources: Bryan Johnson, Blueprint blog, "My Longevity Protocol of 2025" (28 January 2026); his X thread of 7 May 2025; his Substack "31 brutal minutes to saunamaxx" (14 April 2026).
Sounds: Freesound (CC0): Developer_Jake, frenkfurth, Ambiabstract, Cloud-10, mcmikai, TRP, SukritSen, MorenaLuz, Breviceps, mffm, vero.marengere, blukotek, davjanus, LukaCafuka, DavidJGurney, tonalt; Mökkiperikunnalle sounds (CC0).