What is a daily cold plunge protocol?

A daily cold-plunge routine can use brief, repeatable cold exposure: start with a tolerable but distinctly uncomfortable temperature, build up gradually, and aim for consistency rather than pushing through unsafe cold. One cited weekly guideline is about 11 minutes total, split across sessions; daily exposure is an option once that amount feels easy. 1

• Cold shower, plunge, or ice bath: Use whichever is accessible. For immersion, choose a temperature that feels uncomfortably cold but is safe for you; a cold shower is another option. 2
• Strength or hypertrophy training: Avoid cold-water immersion for roughly six hours afterward if preserving strength or muscle-growth adaptations is a priority. 3
• Alternative longer immersion: The discussion also describes a study using about 55°F water for 45 minutes to an hour; this is a much longer exposure, not the brief-session approach. 4
• Ease in gradually: Don’t jump straight into very cold water if you’re new to it. Start warmer—for example, around 50°F—and adapt over about a week. 5