Is a cold plunge the same as an ice bath?

Nearly. Both mean a short dip in cold water. An ice bath is cooled with bagged ice and warms up again; a cold plunge usually has a chiller that holds the temperature.

Does a cold shower do the same as a cold plunge?

Not quite. A shower cools the skin where the water hits it, at whatever temperature the tap delivers. In a plunge the whole body up to the shoulders sits in water at a set temperature.

How long should you stay in a cold plunge?

1 to 3 minutes is the common rule of thumb. A calm, controlled response to the cold matters more than the time. Get out at once if you feel unwell.

What temperature is a cold plunge?

Usually 3 to 15 °C. Beginners start nearer 15 °C and work down over weeks.

What are the downsides of a cold plunge?

The cold shock in the first seconds is a real strain, and some people should not do it without medical advice. A plunge at home also costs space, power and water care.

Glossary

Cold plunge vs. ice bath

A cold plunge is a short dip in cold water of about 3 to 15 °C, usually in a tub with its own chiller that holds the temperature; an ice bath is the older version, cooled with bagged ice.

Also: cold plunge, ice bath, cold plunge pool, cold water immersion

Updated 1 November 2026

Cold plunge, ice bath, ice barrel, cold water swim

The terms are often used as if they meant the same thing. An “ice bath” is a tub of cold water, traditionally cooled with bagged ice. “Cold plunge” has caught on for tubs with their own chiller that are always ready. An “ice barrel” is the barrel-shaped version. A cold water swim happens outdoors, in the sea or a lake.

	Cold water swim	Tub with bagged ice	Cold plunge with chiller
Temperature	Depends on the season	Drops, then climbs back	Set and held, e.g. 3–15 °C
Availability	Outdoors, weather	After preparation	Any time, at home
Preparation	Getting there	Buy or make ice	None
Water quality	Natural	Change the water often	Filter, ozone, UV
Safety	Never alone, mind currents	At home	At home, lid

What a cold plunge session looks like

Common practice is 1 to 3 minutes at 3 to 15 °C, seated up to the shoulders. Beginners start warmer and shorter. In the first seconds breathing speeds up (the cold shock response), so get in slowly and breathe out calmly. Afterwards, dry off and warm up with movement or warm clothes.

Temperature: 3–15 °C
Time: 1–3 minutes
Rhythm: 2–4 × a week

If you have a heart or circulation condition or high blood pressure, or are pregnant, ask a doctor first. Never after alcohol.

Cold plunge at Helsi™

The Helsi™ Ice Plunge is a cold plunge with a built-in chiller: cedar outside, stainless steel inside, 0 to 42 °C, water care with ozone, a 20-micron filter and UV. The tub measures 144.5 × 65 × 85 cm inside and holds about 550 litres.

Helsi™ Ice Plunge from the front — Helsi™ Ice Plunge: cedar and stainless steel.

Blocks of ice in the water of the Helsi™ Ice Plunge — On low settings it makes its own ice.

More at Helsi™

See the Helsi™ Ice Plunge Cold therapy guide