10 minute session
How to Practice
Prepare a tub or plunge at 2-5°C. Get in deliberately — enter feet first, then slowly submerge up to the neck. Do not jump in. Once submerged, focus entirely on slow nasal breathing. The cold shock response (gasping, rapid breathing) peaks in the first 30-60 seconds and passes if you breathe through it. Do not move around — movement displaces the thermal boundary layer and makes the cold feel sharper. Stay submerged for 5-10 minutes. Exit deliberately before you stop shivering; do not chase duration at the expense of safe exit. Warm up naturally — movement, warm drink, dry clothes. Avoid a hot shower immediately after; let the body rewarm itself for 20 minutes first for the full metabolic benefit.
Tips
Safety Notes
- • Advanced practice only. Requires months of build-up through beginner and intermediate protocols.
- • Absolutely contraindicated with cardiovascular disease, uncontrolled hypertension, arrhythmias, or Raynaud's.
- • Never practice alone at these temperatures and durations.
- • If shivering stops and you feel warm or sleepy in the water, exit immediately — this is early hypothermia.
About This Practice
Extended cold exposure at 2-5°C for 5-10 minutes. For experienced practitioners. Listen to your body.
How to Practice
Prepare a tub or plunge at 2-5°C. Get in deliberately — enter feet first, then slowly submerge up to the neck. Do not jump in. Once submerged, focus entirely on slow nasal breathing. The cold shock response (gasping, rapid breathing) peaks in the first 30-60 seconds and passes if you breathe through it. Do not move around — movement displaces the thermal boundary layer and makes the cold feel sharper. Stay submerged for 5-10 minutes. Exit deliberately before you stop shivering; do not chase duration at the expense of safe exit. Warm up naturally — movement, warm drink, dry clothes. Avoid a hot shower immediately after; let the body rewarm itself for 20 minutes first for the full metabolic benefit.