Tech elites are fasting and taking ice baths to push their bodies to work harder


Zachary Rapp wakes up most mornings at the crack of dawn, goes for a run, sips black coffee while ripping through emails, and then steps into a freezing cold shower.

It’s a routine designed to reduce the stress of juggling three different health and biotech start-ups for 18 hours a day.

Rapp is part of the growing “positive stress” movement, consisting of tech workers who claim that such radical tactics will help them live better and longer or — in Silicon Valley — work better for longer.

Inspired by influencers in entertainment, entrepreneurship and science, the positive stress practitioners seek out some combination of extreme temperatures, restrictive diets, punishing exercise routines and general discomfort. There’s also whole body cryotherapy — electric walk-in cold chambers — popping up at spas across the country.

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