Recovery Protocol Cheat Sheet
Every dose in one place. Sauna by goal, cold plunge by experience level, contrast cycles, and the infrared-vs-traditional differences — clean tables you can scan in ten seconds.
For sauna, the studied cardiovascular dose is about 174°F (79°C) for ~20 minutes, 4 to 7 times per week. For cold, beginners use 55 to 60°F for 2 to 5 minutes, building toward roughly 11 minutes of cold per week. Contrast therapy alternates about 2 minutes hot (99 to 104°F) to 1 minute cold (50 to 59°F). Infrared saunas run cooler (110 to 140°F) than traditional (150 to 195°F).
Sauna protocols by goal
Traditional Finnish sauna ranges and the cardiovascular dose come from the Laukkanen Finnish cohort (KIHD) and the FoundMyFitness sauna review. Stay hydrated, keep early sessions short, and step out if you feel lightheaded.
| Goal | Temperature | Duration | Frequency |
|---|---|---|---|
| Traditional Finnish range | 158–212°F (70–100°C) | 5–20 min | As tolerated |
| Cardiovascular (studied dose) | ≥174°F (79°C) | ~20 min | 4–7×/week |
| Relaxation | 176–194°F (80–90°C) | 5–20 min | As desired |
| Beginner ramp | ~110°F (43°C) | 5–10 min | Build gradually |
In the Finnish cohort, 4 to 7 sauna sessions per week (versus once weekly) were associated with roughly 50% lower fatal cardiovascular disease and ~40% lower all-cause mortality. Association, not proof of cause.
Cold plunge by experience level
Experience-level bands from cold-therapy guidance; the weekly total reflects the Huberman/Søberg "about 11 minutes of cold per week" target, split across 2 to 4 short sessions.
| Level | Temperature | Per session |
|---|---|---|
| Beginner | 55–60°F (13–16°C) | 2–5 min |
| Intermediate | 50–55°F (10–13°C) | 1–3 min |
| Advanced | ≤40°F (≤4°C) | 30 sec–2 min |
| Weekly target (all levels) | Uncomfortably cold but safe | ~11 min/week total, 2–4 sessions |
Never plunge alone, never hyperventilate before entering, and control your breathing through the first cold-shock response. Exit on numbness, dizziness, or confusion.
Contrast therapy (hot + cold)
The one ratio with a documented method alternates roughly 2 minutes hot to 1 minute cold. Evidence for contrast bathing is limited, so treat it as a comfortable recovery option.
| Phase | Temperature | Time |
|---|---|---|
| Hot phase | 99–104°F (37–40°C) | ~2 min |
| Cold phase | 50–59°F (10–15°C) | ~1 min |
Want exact rounds and total dose? Use the contrast therapy calculator.
Infrared vs traditional sauna
| Attribute | Infrared | Traditional |
|---|---|---|
| Temperature | 110–140°F (43–60°C) | 150–195°F (66–91°C) |
| How it heats | Infrared light penetrates and warms the body directly | Heats the air; heat envelops the body |
| Humidity | Near room humidity | Dry until water is added to the rocks |
| Warm-up time | Fast (room hot within ~15 min) | ~30–40 min |
| Typical session | 10–30 min | 5–20 min |
One safety line
These are published general protocols, not medical advice. If you are pregnant, have heart disease, low blood pressure, Raynaud's, or take medication that affects heart rate or blood pressure, talk to a doctor before using heat or cold protocols. Every figure here is sourced on our sources page, and the deeper guides are in the protocol field manual.
Frequently asked questions
How hot should a sauna be and how long should you stay in?
Traditional Finnish saunas typically run 158 to 212°F (70 to 100°C), with the well-studied range around 174°F (79°C). Sessions are usually 5 to 20 minutes, with cooling breaks. The large Finnish cohort study (Laukkanen, JAMA Internal Medicine 2015) linked 4 to 7 sessions per week at about 174°F for around 20 minutes with the largest cardiovascular benefit.
What temperature should a cold plunge be for a beginner?
Beginners should start around 55 to 60°F (13 to 16°C) for 2 to 5 minutes. Intermediate plungers use roughly 50 to 55°F (10 to 13°C) for 1 to 3 minutes, and advanced users go to 40°F (4°C) or below for 30 seconds to 2 minutes. A common weekly target is about 11 minutes total of cold across 2 to 4 sessions.
What is the contrast therapy hot-to-cold ratio?
One documented physiotherapy method alternates about 2 minutes hot to 1 minute cold, with the hot phase around 99 to 104°F (37 to 40°C) and the cold phase around 50 to 59°F (10 to 15°C). Evidence for contrast bathing is limited and partly anecdotal, so treat it as a comfortable recovery option rather than a proven performance tool.
Is an infrared sauna the same as a traditional sauna?
No. Infrared saunas run cooler, typically 110 to 140°F (43 to 60°C), and heat your body directly with infrared light. Traditional saunas heat the air to 150 to 195°F (66 to 91°C). Traditional saunas take longer to warm up (about 30 to 40 minutes) while infrared rooms warm faster.