Cold plunge
A short, controlled dip into a plunge pool or barrel of cold water — often alternated with the sauna.
Execution
- Check the water temperature; a plunge pool usually sits between 6 and 15 °C.
- Get in slowly via the steps or the edge — do not jump in.
- Immerse up to your shoulders, keeping your head above water at first.
- Breathe out calmly and slowly until your breathing settles after the initial cold shock.
- After 30 seconds to two minutes, get out, dry off and dress warmly.
Tips
- After the sauna, cool down briefly in the open air and breathe calmly before entering the plunge pool.
- In Movepath, log your time in the water; you can log several rounds as separate entries.
- If you feel unsure, stick with the cold shower — that is not a step back.
Short, cold, controlled
A cold plunge is a short dip into a pool or barrel of cold water — the plunge pool next to the sauna or a chilled plunge tub in the garden. Unlike a classic ice bath, it is usually about one to three minutes or even just seconds, often several times in a row alternating with heat. The stimulus is short but intense, because the water surrounds almost the whole body at once.
Why short is enough
Cold shock hits hardest in the first minute: an involuntary gasp, rapid breathing, and a sudden rise in heart rate and blood pressure. A short plunge delivers exactly that stimulus without cooling the body down. The longer you stay, the more heat you lose, the clumsier your hands and feet become and the greater the risk — so keep it short, especially at first. Whether the stimulus has measurable health effects beyond feeling good is not yet well established: most studies on cold-water bathing are small, and regular plungers often differ from non-plungers in other ways too.
Alternating sauna and plunge
Alternating heat and cold is an old tradition, and the observational data on regular sauna use are encouraging for cardiovascular health. For the cold part, though, the same rules apply as on its own: get in slowly, do not jump into the water overheated, drink enough. Your circulation already has a lot to do after the sauna — a short moment in the fresh air between the two stimuli takes some of the load off.
Progression
- Start: 30 seconds at 12 to 15 °C, head above water.
- Build up: increase to one to two minutes once your breathing settles quickly after getting in.
- Only then go colder: lower the temperature in small steps, without staying longer at the same time.
Safety
- Not medical advice. With heart or circulation conditions, heart rhythm disorders, high blood pressure, Raynaud's syndrome, epilepsy, cold urticaria or during pregnancy, check with a doctor first.
- Do not jump. The sudden cold shock of a head-first dive is the riskiest variant — especially after the sauna.
- Never alone in a barrel or pool you cannot easily climb out of; no alcohol.
- No breathing exercises in the water — no hyperventilating, no breath-holding under water.
- Get out if you shiver, feel numb or dizzy, or are in pain; then warm up gradually instead of going straight back into the hot sauna.
- Hygiene for a home tub: change or filter the water regularly, or germs will multiply.