Can You Cold Plunge in Your Bathtub?

Key Summary:

Yes, you can cold plunge in your bathtub by adding ice and cold water, making it a simple and accessible way to try cold water therapy at home. While this method works for short-term experimentation, it lacks the consistency and features of a dedicated cold plunge tub. For a full recovery and wellness routine, ColdTub offers a new residential model that works as both a cold plunge and a hot tub - all in one unit.

How to Cold Plunge in Your Bathtub

If you're curious about cold plunging but not ready to commit to a full setup, your bathtub is a great place to start. Here's how you can do it safely and effectively:

1. Fill the Tub with Cold Water

Start by filling your tub with the coldest water your tap can provide. Depending on your water system, this usually falls between 50°F and 60°F - a good starting point for most people new to cold plunging.

2. Add Ice

To lower the temperature further, add 10–20 pounds of ice. Bags from a grocery store work well. Keep a thermometer on hand if you want to monitor your setup, but if you're just trying it out, your body will let you know it's cold enough.

3. Ease In and Limit Time

Start by staying in the tub for 30 seconds to 1 minute, especially if you're new to cold exposure. As you get more comfortable, you can slowly increase the time to a few minutes. Always listen to your body, and never stay in if you feel lightheaded or numb.

4. Warm Up After

After the plunge, warm up gradually with a blanket, warm clothes, or a gentle walk. You don’t need a hot shower right away - let your body regulate on its own first, then reheat if needed.

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Want a More Consistent Cold Plunge Experience?

Your bathtub is a great entry point, but it does have its downsides. It's hard to maintain the right temperature, adding ice every time is a chore, and let's be honest - it's not always the cleanest or most relaxing setup.

If you find yourself loving the benefits of cold therapy, it might be time to consider something more permanent. Our new Coldtub Mini is made for exactly this - a compact, easy-to-use residential cold plunge tub that gives you the same recovery power used by athletes and wellness centers, right at home.

Even better? Every ColdTub model functions as both a cold plunge and a hot tub. You can chill down to 35°F or warm up to 104°F - two wellness tools in one simple system. If you’re interested, you can check out our ColdTub Mini, made for home use with all the recovery benefits and none of the hassle. Or browse our shop for more models that fit your lifestyle. Have questions? Reach out to our team anytime - we’re happy to help you figure out what makes sense for your space and routine.

Frequently Asked Questions

How long should I stay in a cold bathtub?

Start with 30 seconds to 1 minute. Over time, you can work up to 2–5 minutes depending on your experience and comfort level.

How much ice do I need for a cold plunge in the tub?

About 10–20 pounds of ice is typically enough to bring the temperature down to the cold plunge zone (around 50–59°F).

Is cold plunging in the bathtub safe?

Yes, for most healthy adults it’s safe - as long as you monitor your body’s reaction and don’t overdo it. Always exit if you feel dizzy or overly uncomfortable.

What are the benefits of cold plunging?

Cold plunging may improve circulation, reduce inflammation, speed up recovery, support immune health, and enhance mood and focus.

When will the ColdTub Mini be available?

The ColdTub Mini is set to launch in mid-summer 2025. Sign up here to be the first to know when it goes live.