Once you own a tub, the next question is how often to get in. The internet answers with everything from once a week to twice a day.
This article collects what the sources say, and what they don’t. It sits under our overview of cold plunge benefits. It is general information, not medical advice.
Short answer: Cleveland Clinic says beginners should plunge once or twice a week. Studies have used two sessions a week, two to three, and daily 30 to 90-second cold showers. No study sets a best frequency, so start at once or twice a week and keep every session under five minutes.
The beginner advice
Cleveland Clinic is the clearest source: “Beginners should only look to cold plunge once or twice a week.” Its other limits go with it: 50 to 59°F to start, a minute or two per session, never longer than five minutes, and never below 40°F.
The page doesn’t say when a beginner stops being one. That part is up to you.
What schedules the studies used
| Study | Schedule | What it found |
|---|---|---|
| Journal of Physiology, 2015 | 10 minutes after each strength session, 2 sessions a week, 12 weeks | Smaller gains in muscle and strength |
| Cell Reports Medicine, 2021 | Winter swimmers who went 2 to 3 times a week | More heat produced in the cold than non-swimmers |
| PLOS One, 2016 | Cold shower of 30, 60, or 90 seconds every day for 30 days | 29% less sickness absence; no fewer illness days |
| PLOS One review, 2025 | 6 of 11 trials tested a single plunge | Few long-term data |
Here’s what the table won’t tell you. None of these compared frequencies against each other. The 2016 trial is the only one that tested different doses, and it varied time (30, 60, or 90 seconds), not days per week.
Daily plunging
The 2016 trial is the closest the sources come. 3,018 adults took a cold finish to their shower every day for 30 days. The authors report: “No related serious adverse events were reported.” The most common mild effect was a cold feeling that lingered, mostly in the hands and feet.
A shower is not a plunge. The cold water in that trial averaged about 10 to 12°C, and only the end of the shower was cold. A full-body plunge for five minutes is a bigger load.
A frequency plan
- Weeks 1 to 4: once or twice a week, 50 to 59°F, a minute or two.
- After that: add a session if you want to, at a temperature you can breathe calmly in. Stay at five minutes or less.
- If you lift for muscle: keep plunges off lifting days, or well after. Cleveland Clinic flags the first four hours after a strength workout.
Steps 2 and 3 combine the sources; they aren’t a protocol any study tested.
Who should check with a doctor first
Cleveland Clinic lists heart disease, high blood pressure, diabetes, pregnancy, peripheral neuropathy, poor circulation, venous stasis, and cold agglutinin disease. If any apply, ask before you set a schedule at all.
What frequency means for your tub
How often you plunge decides whether ice or a chiller makes sense. My rule of thumb: once a week, ice is fine; three or more times a week, the ice runs get old fast.
A soft tub like the SereneLife 105-gallon is $79.99. A chiller tub like the Nurecover Plunge + Chiller is $699 and holds temperature between sessions, so a third session a week costs nothing extra in ice.
Bottom line: once or twice a week to start, under five minutes each, and more only if it suits you. No study shows that more often is better. For the evidence on what plunging does, see the cold plunge benefits overview linked above.
Sources
- Cleveland Clinic, “Are ‘Cold Plunge’ Ice Baths Good for You?” May 8, 2026: health.clevelandclinic.org
- Roberts LA, et al., “Post-exercise cold water immersion attenuates acute anabolic signalling and long-term adaptations in muscle to strength training,” Journal of Physiology, 2015 (abstract): pubmed.ncbi.nlm.nih.gov
- Søberg S, et al., “Altered brown fat thermoregulation and enhanced cold-induced thermogenesis in young, healthy, winter-swimming men,” Cell Reports Medicine, 2021 (abstract): pubmed.ncbi.nlm.nih.gov
- Buijze GA, et al., “The Effect of Cold Showering on Health and Work: A Randomized Controlled Trial,” PLOS One, 2016: journals.plos.org
- Cain T, et al., “Effects of cold-water immersion on health and wellbeing: A systematic review and meta-analysis,” PLOS One, January 29, 2025: journals.plos.org
- SereneLife and Nurecover listings, checked September 2026