TEMPERATURE
Room temp
Cool enough to matter, not iced — sustainable enough to breathe through. Ease in; don't hold your breath.
Recovery suite
Cold plunge in downtown Boulder — the Cool Tub seats eight.
Yes — ONE Boulder Fitness has the Cool Tub, included with membership and steps from the gym floor at 1800 Broadway. It's held at room temperature, not iced; most people stay in for 1–4 minutes, and it pairs with our sauna and steam room for built-in contrast therapy. No membership? Try it on a free day pass.
What it's good for
Colder, clearer, quicker to bounce back.
- A sharp, alert finish after training or a long day outside
- Eases post-effort stiffness for runners, cyclists and climbers
- The cold half of a sauna-to-plunge contrast protocol
- A simple habit you'll actually keep — it's ten steps from the floor
Cold plunge entryHow to use it
DURATION
1–4 minutes
Start with a minute and build. More isn't better — consistency is.
TIMING
After the sauna
Warm through first, then plunge. Finish on cold to leave alert and clear.
Try the cold plunge on a free day pass.
Use the plunge, sauna and steam room before you commit — no membership required to start.
Common questions
Cold plunge, answered.
What are the benefits of a cold plunge?
Cool immersion can ease post-exercise stiffness, leave you feeling alert, and — as the cold half of contrast therapy — support circulation. Evidence is strongest for perceived recovery and readiness; use it as one tool, not a cure-all.
How long should you cold plunge?
Most members stay in for 1–4 minutes. It's held at room temperature, not iced — start with a minute and build tolerance; breathe slowly and never force it.
What temperature is the plunge?
It's the Cool Tub, held at room temperature — not iced.
Can I use the cold plunge without a membership?
Yes — claim a free day pass, or ask about short-term and punch passes for the recovery suite.