https://hormetic.app/ 2026-08-16 https://hormetic.app/img/c01-hero-corridor-v5.webp Two people walking through a dim spa corridor, towels over their shoulders, Apple Watch on each wrist https://hormetic.app/img/c01-heat-mara-adapt-v5.webp After a sauna session: checking Apple Watch in the locker room https://hormetic.app/img/c01-cold-pov-plunge-v2.webp First-person view from a cold plunge: Apple Watch showing 01:14, Zone 2, water 51°F measured https://hormetic.app/img/c01-spa-pov-b.webp First-person view from a hot tub: Apple Watch showing a spa session 7:28 immersed, Zone 1, water 101°F measured https://hormetic.app/img/c01-cta-duo-b6e.webp Two people in a spa corridor; one checks the Apple Watch on his wrist https://hormetic.app/img/shot-03-cold-detail.webp Hormetic iPhone screenshot: cold plunge session detail with cited cold-water safety card and Estimated peak cold score https://hormetic.app/img/shot-09-research.webp Hormetic iPhone screenshot: the Learn tab, where every claim links to a peer-reviewed source https://hormetic.app/privacy 2026-08-16 https://hormetic.app/support 2026-08-16