Why do I feel weird after a sauna?

Author: Reynold Leffler  |  Last update: Saturday, January 3, 2026

You lose water through sweat, toxins leave your body and your heart rate can rise quite a bit too. All these factors can leave you feeling tired after a session.

Why does my body feel weird after a sauna?

Ascher added if you are in the sauna for too long, the heat can place too much stress on your body. This can lead to dizziness, lightheadedness, fatigue, and nausea.

What are the symptoms of detoxing from the sauna?

A review of infrared sauna detox therapy found some side effects. Although mild, the most common ones include heat discomfort, dehydration, low blood pressure, lightheadedness, and nausea. I suggest starting with 10-15 minute sessions at 100-130 F.

What should you not do after a sauna?

After the end of the sauna session, you should not clean yourself with shower gel or soap, just apply some lotion.

What is the negative side effect of sauna?

Sauna use causes sweating, which peaks after approximately fifteen minutes of sauna exposure and results in an average of one pound of fluid loss. While this may cause temporary weight loss, it can also result in dehydration and loss of essential nutrients like magnesium, sodium, and iron.

Why Dr. Peter Attia Changed His Mind About Saunas | The Tim Ferriss Show

Why do I feel dizzy after sauna and cold plunge?

Do you feel dizzy after a sauna and cold plunge? Yes, sudden temperature changes can cause dizziness. The sauna causes blood vessels to dilate, and the cold plunge causes them to constrict rapidly. This sudden redistribution of blood flow in your body can potentially make you feel dizzy.

Why should you not shower after a sauna?

Cooling off after the sauna is important because you can catch a cold if you sweat too much. Sauna-goers should leave enough time to cool down before warming up again. If you can, don't have a shower straight after the sauna. It's better for the body if you cool off in the fresh air first.

Does sauna burn fat?

Saunas themselves do not directly burn fat. The weight loss observed after a sauna session is primarily due to water loss through sweating, which is temporary and regained upon rehydration. With that being said, there are a few ways that saunas can have indirect benefits that may support weight loss or body mass loss.

How long to stay in sauna to get rid of toxins?

Spend 20-30 minutes in the sauna, making sure to drink plenty of water throughout. If you feel dizzy or lightheaded, leave the sauna immediately and cool down with some cold water or a cold compress.

Why am I not feeling good after the sauna?

The main reasons why you may feel worse after an infrared sauna session are due to dehydration, fatigue, your body reacting to detoxification, heat discomfort or light-headedness.

How does a sauna clean you?

PRO: Saunas provide a natural deep cleansing. Increased sweating caused by the sauna is a simple acceleration of one of the body's natural mechanisms for ridding itself of impurities. This can also have a positive effect on enlarged or clogged pores.

Why do I feel sluggish after a sauna?

As your body sweats, it begins to rid itself of toxins and impurities. At the same time, your heart rate begins to increase as your body works hard to maintain a stable internal temperature. All of these physical processes use a lot of energy, which is why you might feel tired after spending time in an infrared sauna.

Is it okay to sauna everyday?

One of the most common questions we get asked is, "Can I sauna every day?" The short answer is yes, it can be safe for most people to sauna daily. However, it's important to keep a few things in mind, like how long you stay in and any health conditions you might have.

Why do I feel euphoric after sauna?

Sauna use promotes a strong increase in β-endorphins [6, 7], which seem to be partly responsible for the euphoria associated with exercise [8].

How many calories do you burn in a 30 minute sauna?

How Many Calories Can You Burn in a Sauna for 30 Minutes? Another study[2] found that a 30-minute session in a sauna could burn between 300 and 500 calories, depending on current weight, metabolism, the sauna's temperature, and the time spent in it.

Does sauna flatten stomach?

While spot reduction is not possible through exercise alone, saunas can play a supportive role in reducing overall body fat percentage, including belly fat. The increased metabolic rate and calorie burn induced by sauna therapy can contribute to a calorie deficit, which is essential for fat loss.

What is the best thing to do right after a sauna?

Showering also helps stimulate blood flow through the body while removing dirt, lotions, and other residues that clog pores, allowing you to perspire freely. Many people also shower immediately after a sauna session because it leaves them feeling clean, invigorated, and energized.

Can I bring my phone in a sauna?

The short answer is that it's generally not recommended to bring your phone into a sauna. The high temperatures and humidity levels can cause damage to your phone's internal components, and the risk of overheating or even explosion is not worth the convenience of having your phone with you.

Is sitting in the sauna good for you?

Research shows that the heat from a sauna can boost your heart health and help maintain a healthy blood pressure. “The heat causes an increase in heart rate and sweating. This results in a physiologic change that mimics exercise.

Why do I feel funny after sauna?

Low blood pressure is another common reason for feeling dizzy after a sauna. The heat causes blood vessels to dilate and directs more blood flow to the skin to help cool your body down. While this is a natural response, it can temporarily reduce blood pressure in vital organs, including your brain.

Why do I feel unwell after a sauna?

Dehydration can result from fluid loss while sweating. People with certain conditions, such as kidney disease, may be at a higher risk of dehydration. The increased temperatures can also lead to dizziness and nausea in some people.

Is it better to cold plunge or sauna first?

It is recommended to first sauna then ice bath and not the other way around, as sauna sessions increase the blood flow and heart rate and make our muscles relax, which cold plunges slows down the heart rate and makes our blood vessels contract.

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