Deliberate Cold Exposure
Andrew Huberman's cold exposure protocol needs only about 11 minutes of cold per week, in short sessions, to meaningfully lift mood and energy. Cold immersion drives a large, sustained rise in dopamine and norepinephrine, roughly 250% and 530% in one classic study, giving hours of focus without a stimulant crash; the temperature that matters is personal, not extreme.
This is Huberman's framework for using cold deliberately, from his dedicated episode. The headline number is a floor, not a target: roughly 11 minutes of cold per week, split into 2 to 4 short sessions. The temperature that matters is personal: cold enough that you want to get out, but safe enough that you can stay in. A cold shower is a perfectly good entry point before any equipment.
Why it works▼
Pick your cold source and temperature
A cold shower is a free, valid entry point; a plunge gives more control and colder temps as you adapt. There's no single right temperature: the threshold ('want to get out, can safely stay') matters more than going extreme.
Aim for ~11 minutes per week, total
This is the minimum effective dose, not the optimum. Frequency and consistency beat heroics; the colder it is, the less time you need.
Do it in the morning, not late evening
The dopamine and norepinephrine rise is great for daytime energy and focus, but the same sympathetic activation late in the day can disrupt sleep.
Stay calm; move to increase the stimulus
Practising clarity while uncomfortable is the resilience training. Moving in the water breaks the warm layer around your skin and increases the stimulus if you want more.
Rewarm naturally, no hot shower
Forcing your body to rewarm itself is what drives the bigger metabolic benefit. Jumping into a hot shower short-circuits that.
Separate cold from strength work
Cold right after resistance training can blunt the muscle-growth signal. It's fine right after endurance, skill or interval work.
Dial in temperature and progress slowly
Start warmer than you think and progress like any training stimulus. A thermometer helps you keep sessions honest and repeatable.
- Anyone who wants clean daytime energy and focus without more caffeine
- People building stress resilience
- Those who want a metabolic nudge over time
- Anyone who can start with just a cold shower
- Never do breath-holding or deliberate hyperventilation before or during cold-water immersion. Combined with water, it can cause blackout and drowning.
- Never enter dangerous or open water for this. Cold shock is real; start warmer than you think and progress gradually.
- Separate cold from strength training by 4 to 6 hours so you don't blunt muscle adaptation.
- If you have a heart condition, high blood pressure, are pregnant, or have any cardiovascular concern, talk to your physician before deliberate cold exposure.
- Keep it in the morning or early afternoon; late-day cold can disrupt sleep.
- We may earn a commission on equipment bought through this page; a cold shower costs nothing.
- July 3, 2026 Protocol published.
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Not medical advice. This page is for education only and is not a substitute for professional medical care. Consult a qualified clinician before changing your health routine.
Independent curation. YourProtocol.ai is an independent platform. This protocol is based on the publicly available work of Andrew Huberman and is not created, reviewed, endorsed by, or affiliated with Andrew Huberman or Stanford.