Cold plunges may boost mood and sleep, but there is no substantial evidence that they improve long-term heart health or prevent disease. Influencers and health coaches like Joe Rogan and Wim Hof have been touting the benefits of cold plunges for years. “Controlled breathing is important, as is keeping sessions short and avoiding cold plunges when you’re unwell, exhausted or alone. To Cold Plunge or Not to Cold Plunge? Cold Plunge FAQsIs a cold plunge safe to do every day?