Cold Plunge in Idaho Falls, Idaho
What is PLUNJ
PLUNJ is a premium sauna and cold plunge studio built on the science of contrast therapy — the intentional alternation between heat and cold to amplify the benefits of both. At PLUNJ Idaho Falls, we've created a premier facility for this wellness practice: clean, precisely temperature-controlled, with expert guidance and premium equipment designed for your transformation.
Wanting to supercharge your recovery, manage chronic inflammation, elevate mood and mental clarity, or build resilience? Cold plunging combined with sauna creates a powerful protocol that Idaho Falls residents are adopting into their wellness routine.
Book a Session
Ready to experience contrast therapy at its best? Our 60-minute sessions offer complete access to both the sauna and cold plunge, with ample time for multiple rounds of the PLUNJ Regimen.
Cold Plunge Specifications
Our cold plunge pool is maintained at 45–50°F and accommodates up to four people, making it a blend of personal challenge and group experience. This temperature is calibrated to produce significant physiological adaptations — increased circulation, decreased inflammation, mood elevation, and enhanced cognition — while remaining safe and accessible for newcomers.
Duration: Guests typically spend 30 seconds to 5 minutes immersed. Start with shorter times and gradually build as your body adapts. Pay attention to your body's signals.
Why 45–50°F? Research demonstrates this range produces optimal effects with manageable difficulty. It's cold enough to matter without being unsafe.
PLUNJ Idaho Falls Information
Location:
3510 S 25th E, Idaho Falls, ID 83404
Hours:
Monday – Friday: 6:00 AM – 10:00 PM
Saturday: 7:00 AM – 9:00 PM
Sunday: 8:00 AM – 8:00 PM
Contact:
Phone: (208) 520-7449
Email: idahofalls@plunj.co
Parking:
Free parking available on-site.
What's Included in a Session
Your 60-minute session at PLUNJ Idaho Falls includes full access to our entire facility:
- Cold plunge pool maintained at 45–50°F (up to four guests)
- Dry sauna heated to 175–190°F with steam capability
- Comfortable rest area with seating and towels
- Private bathrooms with full shower amenities, soap, shampoo, and conditioner
- Secure lockers for personal items
- Complimentary herbal tea and filtered water
- Access to the lounge for post-session recovery
First-time guests: Arrive 10–15 minutes early. Our staff will show you around and answer any questions.
The PLUNJ Regimen
Idaho Falls guests typically follow this proven sequence:
- Sauna — 10–15 minutes at 175–190°F
- Transition — Step out, let your body cool slightly, rinse if preferred
- Cold plunge — 2–3 minutes at 45–50°F
- Rest — 3–5 minutes in our rest station to allow recovery
- Repeat — Complete 2–3 full cycles for maximum benefit
This alternation drives circulation, expedites recovery, and produces a shift in mood and energy that's remarkable. Most guests feel noticeably better after their very first session.
Frequently Asked Questions
What should I bring?
Bring a swimsuit, water bottle, and flip-flops or sandals. Everything else is provided: towels, toiletries, herbal tea, and water.
How long is a session?
Standard sessions run 60 minutes. You have complete access to both facilities and can repeat the regimen as many times as desired.
Is cold plunging safe?
Yes, when practiced correctly and mindfully. Cold plunging is contraindicated for people with certain cardiac conditions or uncontrolled hypertension. Consult your physician if you have health concerns. Exit immediately if you experience dizziness, breathing difficulty, or anything else that feels wrong.
Can I bring a guest?
Absolutely. Book for multiple people through our online system, the PLUNJ app, or by calling (208) 520-7449.
What if I'm new to this?
Newcomers are very welcome. Begin with shorter plunge durations (30–45 seconds) and expand gradually. Our staff provides technique guidance for a comfortable, effective first experience.
Do I need prior experience?
No experience required. Cold plunging is a learnable skill. Our team supports you regardless of your background.
Memberships
Drop in as needed for quick resets, or commit to a membership to integrate contrast therapy into your regular wellness routine. Memberships provide the best value for consistent practitioners — and benefits compound with regular practice.
Our membership plans are flexible and designed for various commitment levels. Whether you're just starting or already experienced with cold plunging, we have a plan aligned with your goals.
