How One Cold Plunge Changed Everything
I was burned out, anxious, and stuck in a cycle of 12-hour workdays, caffeine crashes, and weekend escapism. My health, relationships, and energy were spiraling.
Then, I tried a 5-minute cold plunge in my DIY chest freezer. Clarity, focus, and energy hit me like a wave, but maintaining the setup was a nightmare.
So I built something better. With a master's-level background in mechanical engineering and cooling systems, I designed a cold plunge that was clean, low-maintenance, and portable. That became the Elite Tub in 2021. Spire, our premium cedar and 316 stainless plunge, followed in 2026.
It didn't just change my health. I quit alcohol, built a community of high-performers in San Diego, and found a new mission: helping others transform their mind, body, and life.
Every plunge isn't just about cold water. It's about who you're becoming. So, who do you want to become?”
Ciaran Flanagan, Founder of Inergize
Inner Work
The plunge isn't the point. It's the trigger. Three minutes of voluntary discomfort each morning trains the system that runs your day, the one that decides how you handle a hard email, a flat tire, or a 2 a.m. wake-up.
- Master discomfort. The body learns to stay calm under cold. The mind borrows that signal.
- Build discipline. Small, daily, repeatable. The most underrated form of progress.
- Shape your identity. You become a person who plunges. That changes other things.
Energy
Caffeine borrows energy. Cold therapy builds it. Most owners report a shift within 2-4 weeks that doesn't crash:
- Sustained focus (2-4 hours post-plunge, norepinephrine-driven)
- Faster recovery between training sessions
- Better sleep within the first month
- Lower baseline stress over time
Meet The Team
CEO & Founder
Master's-level mechanical engineer. Built the Elite Tub from a DIY chest freezer in 2021. Built Spire Elite from a blank sheet in 2026. Snowboards, lifts, plunges at 37°F every morning. Protocol: 3 minutes at 37°F, first thing.
Director of Operations
Runs the workflows that turn engineering into shipped units. Trails, slopes, ocean, Devin's idea of a rest day is moving fast outside. Protocol: 4 minutes at 42°F, post-workout.
Director of Sales
Talks to customers all day. Surfs in the morning, plunges before meetings, knows Spire and Elite owners by name. Protocol: 2 minutes at 39°F, before meetings.
Customer Support Manager
Runs the support team that's earned 162+ five-star reviews. Pilates, ballet, yoga. Calm voice on the phone when something breaks. Protocol: 5 minutes at 50°F, after yoga.
Customer Support Specialist
Problem-solver. Strength + cardio. The person you want on the other end of a chiller troubleshooting email at 9 p.m. on a Tuesday. Protocol: 2 minutes at 38°F, post-HIIT.
Customer Support Systems Specialist
Builds the systems behind the support team. Coastal walks, clean dashboards, fast replies. Keeps the support pipeline running. Protocol: 3 minutes at 45°F, before work.