How to Start Cold Plunging: A Beginner's Guide to Ice Baths

Cold plunging — the practice of deliberately immersing your body in cold water — has surged in popularity over the past few years, driven by advocates like Andrew Huberman, Wim Hof, and a growing body of research exploring the physiological effects of cold exposure. But if you have never done it before, the idea of submerging yourself in ice-cold water can be genuinely intimidating.

This guide is designed to take you from total beginner to confident cold plunger. We will cover what the research says, how to prepare, exactly what to do during your first sessions, and the most important safety considerations to keep in mind.

What Does the Research Say?

Cold water immersion is not new — it has been used in various cultures for centuries, from Scandinavian ice swimming to Japanese misogi rituals. Modern research is catching up, and while the evidence base is still developing, several areas show promising results.

Potential benefits supported by research:

• Reduced muscle soreness after exercise: A 2022 meta-analysis in Sports Medicine found that cold water immersion was associated with reduced delayed-onset muscle soreness (DOMS) in the 24–72 hours following intense exercise. The optimal protocol appeared to be 10–15 minutes at 50–59 degrees Fahrenheit (10–15 degrees Celsius).
• Increased norepinephrine: Cold exposure triggers a significant release of norepinephrine (noradrenaline), a neurotransmitter and hormone that plays a role in attention, focus, and mood. A frequently cited study by Tipton et al. found that cold water immersion at 57 degrees Fahrenheit (14 degrees Celsius) increased plasma norepinephrine by 200–300%.
• Potential metabolic effects: Cold exposure activates brown adipose tissue (brown fat), which burns calories to generate heat. Some researchers have suggested that regular cold exposure may support metabolic health, though the practical magnitude of this effect in humans is still being studied.
• Reported mood and energy improvements: Many consistent cold plungers report improved mood, energy, and mental clarity following sessions. While some of this may be attributable to the norepinephrine response, the subjective experience of overcoming a voluntary stressor likely also plays a role.

Important context: Much of the cold plunge research involves small sample sizes, and optimal protocols (temperature, duration, frequency) are still being refined. Cold plunging should be viewed as a potentially useful practice, not a guaranteed solution for any specific condition.

Before You Start: Essential Preparation

Choose Your Cold Water Source

You do not need an expensive dedicated cold plunge tub to get started. Here are the most common options, from simplest to most invested:

• Cold shower: The easiest entry point. Turn the water as cold as it goes (typically 55–65 degrees Fahrenheit depending on your location and time of year). This is free and requires no equipment.
• Bathtub with ice: Fill your bathtub with cold water and add bags of ice to bring the temperature down. This is affordable and accessible.
• Outdoor body of water: Lakes, rivers, or the ocean — depending on your location and the season. Always prioritize safety with natural water sources.
• Dedicated cold plunge tub: Purpose-built units like the Plunge, Ice Barrel, or Cold Stoic offer temperature control and filtration. These range from $150 (simple barrels) to $5,000+ (chiller units with precise temperature control).

Get a Thermometer

Knowing the actual water temperature is important, especially as a beginner. A simple waterproof digital thermometer works fine. This allows you to calibrate your experience and gradually adjust your protocol over time.

Set Your Environment

• Have a warm towel and dry clothes ready before you get in
• If plunging outdoors, make sure you have a way to warm up afterward
• Never cold plunge alone for your first several sessions — have someone nearby in case you need assistance
• Keep your phone accessible in case of emergency

Your First Cold Plunge: Step by Step

Step 1: Start with Your Breath

Before getting into the water, take 2–3 minutes to practice calm, controlled breathing. This is important because cold water triggers the cold shock response — a gasp reflex followed by rapid, uncontrolled breathing. Practicing intentional breathing beforehand helps you maintain composure when the cold hits.

Breathing technique: Inhale slowly through your nose for 4 counts. Exhale slowly through your mouth for 6 counts. Repeat 5–10 times. This activates the parasympathetic nervous system and prepares your body for the stress of cold exposure.

Step 2: Enter Gradually (Or All at Once)

There are two schools of thought here:

• Gradual entry: Walk in slowly, submerging your legs first, then hips, then torso. This gives your body more time to adapt but also extends the uncomfortable transition period.
• Full immersion: Step or lower yourself in up to your shoulders in one deliberate motion. This is more intense initially but gets the cold shock response over with faster.

Neither approach is objectively better. Try both and see which works for you. Many experienced cold plungers prefer full immersion because the anticipation of gradual entry can feel worse than the cold itself.

Step 3: Focus on Your Breathing

The moment cold water hits your skin, your body will want to gasp and hyperventilate. This is the cold shock response, and it is completely normal. Your single most important task in the first 30–60 seconds is to override this reflex with deliberate, controlled breathing.

In the water: Exhale slowly and deliberately. Focus entirely on extending your exhale. Some people find it helpful to hum or make an audible "whooooo" sound on the exhale — this naturally slows the breath and gives the mind something to focus on.

The initial shock typically subsides significantly after 60–90 seconds. Many people describe a transition from "I need to get out immediately" to "This is uncomfortable but manageable." This is the norepinephrine kicking in.

Step 4: Find Your Duration

As a complete beginner, here is a conservative progression:

• Week 1–2: 30 seconds to 1 minute
• Week 3–4: 1 to 2 minutes
• Week 5–6: 2 to 3 minutes
• Week 7+: 3 to 5 minutes (this is sufficient for most people)

There is no evidence that longer durations provide proportionally greater benefits. Most research protocols use 2–5 minute immersions. Going beyond 10 minutes significantly increases the risk of hypothermia without clear additional benefit.

Step 5: Get Out and Warm Up Naturally

When your time is up, exit the water calmly. Resist the urge to immediately jump into a hot shower. Research suggests that allowing your body to rewarm naturally may enhance the metabolic and circulatory benefits of cold exposure, as your body generates heat on its own to restore its core temperature.

Instead:

• Dry off with a towel
• Put on warm, dry clothes
• Move gently — light walking, arm circles, or other movement that generates heat
• Allow 10–15 minutes for natural rewarming before taking a warm (not hot) shower if desired

Step 6: Track How You Feel

After your first several sessions, pay attention to how you feel in the 30 minutes to 2 hours after plunging. Many people report a distinct sense of elevated mood, mental clarity, and calm energy. This is your personal data point. If cold plunging consistently makes you feel good afterward, that is a strong signal to continue.

Temperature Guidelines

Experience Level	Temperature Range	Notes
Absolute beginner	60–65 F (15–18 C)	Cool but manageable
Beginner (2–4 weeks)	55–60 F (12–15 C)	Noticeably cold
Intermediate (1–3 months)	50–55 F (10–12 C)	Where most research protocols sit
Advanced (3+ months)	40–50 F (4–10 C)	Intense — approach gradually

The temperature that feels challenging to you is the right temperature for you. This is not a competition. The physiological benefits appear to be driven by the stress response relative to your personal adaptation, not by an absolute temperature number.

How Often Should You Cold Plunge?

Research protocols and experienced practitioners generally suggest 2–4 sessions per week as a sustainable frequency that allows for adaptation without excessive stress. Some people plunge daily, while others find 2–3 times per week is sufficient to maintain the benefits.

If you are using cold plunging specifically for post-exercise recovery, be aware of an important nuance: some research suggests that cold exposure immediately after strength training may blunt some of the hypertrophic (muscle-building) adaptations. If your primary goal is muscle growth, consider timing your cold plunges at least 4–6 hours after resistance training, or on separate days entirely.

Safety Considerations

Cold water immersion carries real risks if done carelessly. Take these seriously:

• Never cold plunge alone until you are experienced and confident in your response to cold water. The cold shock response can cause involuntary gasping, and in rare cases, cardiac arrhythmias.
• Do not cold plunge if you have a cardiovascular condition without explicit clearance from your healthcare provider. Cold water causes immediate vasoconstriction and a spike in blood pressure and heart rate.
• Avoid alcohol before or during cold exposure. Alcohol impairs thermoregulation and judgment.
• Exit immediately if you experience chest pain, dizziness, confusion, or difficulty breathing. These are signs that your body is not coping with the stress.
• Do not submerge your head as a beginner. The dive reflex triggered by facial immersion in cold water can cause a dramatic drop in heart rate.
• Know the signs of hypothermia: Uncontrollable shivering, confusion, slurred speech, or loss of coordination. If you experience any of these, get warm immediately.
• Pregnant individuals should consult their healthcare provider before attempting cold water immersion.

The Bottom Line

Cold plunging is a practice that many people find genuinely beneficial for their energy, mood, and recovery. The research is encouraging, the barrier to entry is low (a cold shower costs nothing), and the time commitment is minimal — 2 to 5 minutes per session.

Start conservatively. Focus on your breathing. Be consistent. Track how you feel. And most importantly, respect the cold — it is a powerful stimulus that deserves thoughtful, gradual progression rather than reckless bravado.

The discomfort is temporary. The clarity, energy, and sense of accomplishment you may feel afterward can set the tone for your entire day.

Energy & Spirit Guide for a comprehensive overview