Skip to main content

Ice bath benefits Step into the cold, find your own reason

What the research found, from the first minute to the weeks after.

5 min read

Everyone gets into an ice bath for their own reason.

In 2025, researchers looked at 11 studies of cold water. They found three good signs:

  • Less stress, 12 hours later
  • Better sleep after exercise, in studies of men
  • Fewer days off sick, in one study of cold showers

The rest is yours to find: your reason, your temperature, your time.

Ask ten people why they get into an ice bath.

You will hear ten different answers.

Which one is yours?

  • Before the day startsA few quiet minutes before the house wakes up.
  • After a hard sessionStraight from the run, the surf or the gym.
  • Hot and coldBetween rounds in the sauna, often with friends.
  • A pauseFive minutes away from the screen.
  • The challengeA degree colder than last month, in your own time.
  • The ritualThe same place, the same time, most days.

Some people can’t explain it. They just keep coming back.

That part is personal. No study can measure it for you.

Studies can still show what tends to happen.

In 2025, a team at the University of South Australia did just that. They looked at 11 studies of cold water. Together, the studies had 3,177 healthy adults. You can read their review in PLOS ONE.

Here is what they found, step by step.

The journey, step by step

  1. 01The first minuteCold shock, and why it feels hard
  2. 02Twelve hours laterLess stress, half a day on
  3. 03That nightBetter sleep after exercise
  4. 04The weeks afterFewer days off sick, in one study
  5. 05Your reasonThe part only you can answer
  6. 06Your temperatureAnywhere from 3°C to 40°C

01 · Getting in

The first minute

The first minute is the one everyone remembers.

The cold takes your breath away. You gasp. You breathe fast. This is called cold shock.

The researchers say your body treats the cold as a challenge. They compare it to a hard workout.

So yes, it feels hard. For some people, that is the point. For a few minutes, your phone can’t reach you. Your to-do list can’t either.

The gasp is also why one rule never changes: never get in alone.

A person sitting in a Phantom ice bath, one hand on its stainless steel rim
Start warmer and shorter than you think you need. Build from there.

02 · Stepping out

Twelve hours later

You get out. You dry off. Your day carries on.

The researchers checked people’s stress at different times. The clear change came half a day later.

Twelve hours after the cold, stress was lower.

Get in at 7 in the morning. Twelve hours later, it is 7 in the evening.

03 · Winding down

That night

Sleep was better too. In the studies, men got into cold water after exercise. They slept better. The researchers want the same studies with women.

Some people use the ice bath to wind down in the evening. Some like the morning. Others go straight after training.

There is no single right time. Only the one that fits your day.

Phantom ice bath on a clifftop timber deck above the sea, in low sun
Morning, evening or after training. The right time is the one that fits your day.

04 · Making it a habit

The weeks after

Keep going for a few weeks. It becomes a habit. That is where the next results come from.

Some people took short cold showers. They rated their life as a little better for a while.

In one study, people had cold showers often. They took 29% fewer days off sick.

Both results come from cold showers. The sick days come from just one study. So they are early signs, not the final word.

05 · Why you get in

Your reason

This is the part the research leaves to you.

The researchers say it is too early to know who gains most. It is too early to know the ideal way to do it, too.

It depends on who gets in. It depends on when, and how.

A team in the UK said the same in 2017. Mike Tipton led it, at the University of Portsmouth. They said what cold water does depends on the situation. Most claims about cold water had a sensible reason behind them, they found.

Studies look at thousands of people. You are one person, with your own reason.

Your temperature is yours to find. So is your time.

06 · Your ice bath

Finding your temperature

The studies used water between 7°C and 15°C.

In Indonesia’s heat, water that cold is hard to keep. You need a chiller, a machine that cools the water. Without one, you need a lot of ice. The warm air works against you all day, too.

The Phantom and the Oracle hold their water anywhere from 3°C to 40°C, with no ice. Each holds 550 litres.

So you can start warmer than the studies did. Go colder bit by bit. Make it warm when you feel like it.

Phantom ice bath on a timber deck beside a pool, under palm trees
A Phantom by the pool. Its chiller holds the water anywhere from 3°C to 40°C.
  • Stainless steel. The kind used at sea (SS316). Made by hand in Indonesia. A 3-year warranty from the day it goes in.
  • Looked after. Ozone and a filter keep the water clean. On our care plan, we change the water and filter every two weeks.
  • A step and lid with a story. ECOLLABO8 make them from 75 kg of recycled plastic.
  • Hot and cold. Pair it with a sauna in the Hot & Cold set. Read what sauna wood has to do.

Want to see one? Look at our installs. Compare the models in the price guide. You can also book a call to talk it through.

Before you get in

Never alone. With a heart condition, high blood pressure or pregnancy, talk to a doctor first.

Start warmer and shorter than you think you need. Get out if you feel unwell.

Have a health condition? The Australian team say to take extra care.

Thinking about an ice bath for your home, villa or studio? See the Phantom and the Oracle, or send us an enquiry.

SOURCES

The figures in this post are from the 2025 review and the University of South Australia's summary of it, with the 2017 review for the wider view. Checked on 4 November 2026.

  1. PLOS ONE

    journals.plos.org (opens in a new tab)
    Details

    Cain, Brinsley, Bennett, Nelson, Maher and Singh, Effects of cold-water immersion on health and wellbeing: a systematic review and meta-analysis, January 2025. 11 randomised trials, 3,177 healthy adults, water at 7 to 15°C for 30 seconds to 2 hours (10 baths, 1 shower). Stress lower 12 hours after. Better sleep quality and quality of life. 29% fewer sick days among people taking cold showers, in one trial. Inflammation up straight after and an hour after, an acute response.

  2. University of South Australia

    newswise.com (opens in a new tab)
    Details

    The big chill: is cold-water immersion good for our health?, 31 January 2025. The authors' summary: stress lower for about 12 hours; quality of life slightly higher with short cold showers in the short term; better sleep after exercise, in men; the early rise in inflammation as the body's reaction to cold as a stressor; not yet enough high-quality research to say who benefits most or the ideal approach; extra care for anyone with an existing health condition.

  3. Experimental Physiology

    researchportal.port.ac.uk (opens in a new tab)
    Details

    Tipton, Collier, Corbett, Massey and Harper, Cold water immersion: kill or cure?, November 2017. Volume 102, issue 11. Cold water as threat or treatment, depending on circumstance; a credible rationale in most cases for the claims made for it.