Contrast Therapy Timing: How Long Hot, How Long Cold?
Key facts
Contrast therapy is the practice of alternating between heat exposure, such as a sauna, and cold exposure, such as an ice bath or cold shower, in repeated rounds.
The most common protocol is 3 to 5 minutes in heat, then 45 to 60 seconds in cold, repeated for 3 to 5 rounds (roughly a 3:1 ratio).
Finish on cold if you want to feel alert and return to activity, finish on hot if you want to wind down.
For post-workout recovery, contrast therapy is most commonly done within 1 to 2 hours of hard training.
At Summer Healing in Brunswick, an infrared sauna session is $50 for 1 hour, alongside ice baths and a Swedish sauna ($50 for 30 minutes).
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Short answer: the most common contrast therapy protocol uses a 3:1 ratio, roughly 3 to 5 minutes in heat followed by 45 to 60 seconds in cold, repeated for 3 to 5 rounds. Whether you finish on hot or cold depends on what you're using it for. Here's the actual breakdown.
The Standard Timing Protocol
Phase | Typical duration |
Heat (sauna or hot bath) | 3-5 minutes |
Cold (plunge or cold shower) | 45-60 seconds |
Rounds | 3-5 full cycles |
This 3:1 hot-to-cold ratio is the most widely used starting point, spend roughly three times as long in the heat as you do in the cold, and repeat the full cycle several times rather than doing one long round of each.
Should You Finish on Hot or Cold?
This depends entirely on your goal, not a fixed rule:
Finish on cold if you're heading back into activity or want an alerting, energising effect, cold exposure tends to leave you feeling more stimulated.
Finish on hot if your goal is relaxation, winding down, or better sleep, ending on heat leaves the body in a more relaxed state.
When to Do It
If you're using contrast therapy for post-workout recovery, doing it within one to two hours after intense training or competition is when it's most commonly used to help manage inflammation and muscle soreness. Outside of a training context, there's no strict timing requirement, whatever fits your schedule works.
This is general guidance, not medical advice. If you have a cardiovascular condition or are unsure whether contrast therapy is appropriate for you, check with your doctor first, the same contraindications that apply to ice baths and infrared sauna individually apply here too.
For the full picture on what contrast therapy actually is and its broader benefits, see our complete guide to contrast therapy in Melbourne.
Key Takeaways
Use a 3:1 hot-to-cold ratio as your starting point, then adjust to how you feel.
Do 3 to 5 full rounds. More rounds in one session is not better.
Your last round decides the effect: cold to energise, hot to relax.
Anyone with a heart or circulation condition should check with a doctor before starting.
Contrast Therapy in Brunswick: Prices and Booking
Contrast therapy needs both a heat source and a cold source. Both are available at the same address at Summer Healing, Brunswick.
Option | What it is | Price |
Large Infrared Sauna | The heat side of your rounds, 1-hour session | $50 |
Traditional Swedish Sauna | A hotter, shorter option, 30-minute session | $50 |
Ice bath | The cold side of your rounds | See the Recovery Centre page for current pricing |
How to book
Book your sauna session online.
Bring water and a towel, and avoid alcohol before and after.
Check the Recovery Centre page for current ice bath access and pricing, then plan your rounds.
Summer Healing, 878a Sydney Road, Brunswick VIC 3056 · 1800 281 366 · Open 7 days, 6:00am to 8:30pm
Frequently Asked Questions
Is a 3:1 hot-to-cold ratio always right?
It's the most common starting point, but tolerance varies. Beginners often start with shorter cold exposure and build up gradually.
How many rounds should I do?
3 to 5 full cycles is typical. More isn't necessarily better, consistency over time matters more than pushing extra rounds in one session.
Can I do contrast therapy every day?
Many people do, though it's worth paying attention to how your body responds rather than following a fixed rule.
Where can I do contrast therapy in Melbourne?
Summer Healing in Brunswick has infrared and Swedish saunas and ice baths at the same address, 878a Sydney Road.
How much does a contrast therapy session cost?
Sauna sessions at Summer Healing start at $50 (infrared for 1 hour, Swedish sauna for 30 minutes). See the Recovery Centre page for current ice bath pricing.
Do I need to book contrast therapy in advance?
Booking online is the simplest way to secure a sauna slot. Check the Recovery Centre page for current availability.
Sources and method: The timing ranges reflect commonly published contrast therapy protocols from recovery and sauna providers. There is no single clinical standard, so treat them as starting points and adjust to your own tolerance. This is general information, not medical advice. Prices are from the Summer Healing wellness pages, checked September 2026, and can change.
Try Contrast Therapy in Brunswick
Infrared sauna, ice bath, and recovery facilities under one roof.
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