For recovery and relaxation, do sauna first then cold, since that's the traditional Finnish approach and the sequence most people tolerate well. For acute inflammation or joint soreness, cold first then sauna may work better, because the cold reduces swelling and the sauna flushes the area with oxygenated blood afterward.
The short answer is yes, but the order matters depending on what you want to accomplish. The combination of heat and cold exposure—often called contrast therapy—has been used for centuries across Finnish, Russian, and Scandinavian traditions. Modern research is starting to catch up with what these cultures figured out through experience.
Let me walk through what happens in your body during each sequence, so you can decide which approach fits your goals.
What happens during heat exposure first
When you sit in a sauna, your core temperature rises. Your heart rate increases by 30 to 50 beats per minute as blood vessels dilate (vasodilation) to push blood toward your skin for cooling. That's why your skin turns red. Your body releases heat shock proteins, which help repair damaged proteins and protect cells from stress. A 2018 study in Experimental Gerontology found that a single sauna session increased heat shock protein 70 levels by nearly 50 percent.
Your pituitary gland releases beta-endorphins, which is why you feel relaxed afterward. Blood flow to your muscles increases. Your sympathetic nervous system (fight or flight) activates initially, but after about 10 to 15 minutes, your parasympathetic system (rest and digest) takes over.
What happens during cold exposure first
Cold plunges do the opposite. Blood vessels constrict (vasoconstriction), blood flow shifts from your extremities to your core, and your heart rate spikes from the shock. Your body releases norepinephrine and dopamine. A 2023 study in Physiology & Behavior found that cold exposure increased dopamine levels by 250 percent and norepinephrine by 530 percent.
Your sympathetic nervous system stays activated. Breathing becomes rapid and shallow unless you consciously control it. Brown adipose tissue (brown fat) activates to generate heat. This is the body's attempt to warm itself.
Sequence one: Sauna first, then cold
This is the traditional Finnish approach. You heat up, then cool down. Most Finnish sauna users spend 10 to 15 minutes in the sauna, then take a brief cold shower or dip, and repeat the cycle two to three times.
What happens physiologically
The heat dilates your blood vessels. When you hit cold water, those vessels constrict rapidly. This creates a pumping effect in your circulatory system. Blood that was pooled in your extremities gets pushed back toward your core, then recirculates when you warm up again. Some researchers call this "vascular gymnastics."
A 2016 study in PLOS ONE looked at 73 men who used a sauna followed by a cold swim in winter. After three months, they reported improvements in mood, energy levels, and overall well-being. The combination appeared to reduce systemic inflammation markers more than sauna alone.
Best for
- Recovery after intense training
- Improving circulation
- Reducing muscle soreness
- Mental relaxation and sleep quality
The practical protocol
Sauna at 170 to 200°F for 10 to 15 minutes. Cold shower or plunge at 50 to 60°F for 30 seconds to 2 minutes. Repeat two to three cycles. End on warm if you want to sleep. End on cold if you want alertness.
Sequence two: Cold first, then sauna
This is less common but has its own advantages. Some athletes use this sequence to reduce inflammation first, then promote blood flow afterward.
What happens physiologically
Cold exposure first reduces inflammation and numbs pain receptors. When you then enter the sauna, the rapid vasodilation flushes the area with oxygenated blood. This can accelerate clearance of metabolic waste products like lactate.
A 2014 review in European Journal of Applied Physiology noted that cold exposure before exercise reduced muscle damage markers, but the same principle may apply before heat exposure. The cold constricts, the sauna flushes.
Best for
- Acute injury management (with doctor approval)
- Reducing localized inflammation
- Preparing for a training session if you have joint soreness
The practical protocol
Cold exposure for 1 to 3 minutes. Sauna for 10 to 15 minutes. One cycle is usually sufficient. Do not repeat the cold exposure afterward if your goal is inflammation reduction.
What the research actually says about contrast therapy
Most of the existing research focuses on sauna alone or cold exposure alone. Studies combining both are limited but growing.
A 2022 study in Journal of Thermal Biology examined 24 healthy men doing contrast therapy (sauna then cold shower) three times per week for four weeks. The group showed improved heart rate variability, suggesting better autonomic nervous system balance. They also reported lower perceived stress scores.
A separate 2020 study in International Journal of Environmental Research and Public Health followed 100 people who did sauna followed by cold immersion. The combination group had lower C-reactive protein levels (a marker of inflammation) compared to sauna-only or cold-only groups after eight weeks.
The caveat: sample sizes are small. Most studies have fewer than 100 participants. The findings are suggestive, not definitive.
Who should avoid this sequence
Contrast therapy is not for everyone.
If you have high blood pressure that is not well controlled, the rapid vasoconstriction from cold exposure can spike your numbers dangerously. A 2019 case report in BMJ Case Reports documented a hypertensive crisis in a man with untreated hypertension who did a cold plunge after sauna.
If you have heart disease, arrhythmias, or a history of stroke, talk to your doctor before attempting any temperature stress protocol. The combination of heat and cold puts demands on your cardiovascular system that a healthy heart handles fine, but a compromised one may not.
If you have Raynaud's phenomenon or poor circulation in your hands and feet, the cold exposure may trigger severe vasospasms.
The practical takeaway
If you have one goal, pick the sequence that matches it.
Recovery and relaxation: Sauna first, then cold. This is the traditional sequence and the one most people tolerate well. It promotes circulation, reduces muscle soreness, and leaves you feeling calm.
Inflammation reduction and pain management: Cold first, then sauna. The cold reduces swelling, and the sauna flushes the area with fresh blood afterward. This sequence is less comfortable but may be more effective for specific injuries.
General health maintenance: Either order works. The benefits come from the temperature contrast itself, not the specific sequence. A 2021 survey of 3,000 Finnish sauna users published in Complementary Therapies in Medicine found that 85 percent used sauna first, then cold. But the remaining 15 percent who did the reverse reported similar health satisfaction.
One thing the research is clear on: the cold exposure should be brief. Two minutes in cold water is enough. Longer exposure increases the stress response without additional benefit for most people.
And the sauna session should not exceed 20 minutes unless you are experienced and well-hydrated. Heat stroke is real. Do not push through dizziness or nausea.
What you can do starting today
Try the sequence once. Sauna for 12 minutes. Cold shower for 60 seconds. See how you feel the next morning. If your muscles feel less sore and your mood is better, that is your body telling you something.
If you hate it, do not force it. Some men never adapt to cold exposure, and that is fine. Sauna alone provides measurable health benefits. The cold is optional, not required.
As always, if you have any cardiovascular condition, blood pressure issues, or are on medication that affects your heart rate or blood pressure, check with your doctor before starting contrast therapy. A single conversation can prevent a bad outcome.
Frequently asked questions
How long should you stay in the sauna before a cold shower?
Most Finnish sauna users spend around ten to fifteen minutes in the sauna before moving to cold water. You shouldn't exceed twenty minutes unless you're experienced and well-hydrated, since heat stroke is a real risk. If you feel dizzy or nauseous, get out.
How long should the cold shower be after a sauna?
A brief cold exposure of thirty seconds to two minutes is enough after a sauna session. The article notes that longer cold exposure increases the stress response without additional benefit for most people. Two minutes in cold water is a reasonable upper limit.
Should you end contrast therapy on hot or cold?
It depends on what you want afterward. End on warm if your goal is better sleep and relaxation, and end on cold if you want to feel more alert. The sequence you finish on shifts your nervous system in different directions.
Who should avoid sauna and cold shower contrast therapy?
People with uncontrolled high blood pressure, heart disease, arrhythmias, or a history of stroke should talk to a doctor before trying contrast therapy, since the rapid temperature changes put real demands on the cardiovascular system. Those with Raynaud's phenomenon should also be cautious, as cold exposure can trigger severe vasospasms.