Hot tub time can help you relaxed and ease your worries. However, too much time soaking in the hot water can backfire.

So, what happens if you stay in a hot too long? Our article will give you the answer you are looking for.

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What happens if you stay in a hot tub for too long?

Staying in a hot tub for too long can cause health issues, some of which leave dehydration effects on your skin while some can be life-threatening.

The human body’s core temperature is 98.6 degrees Fahrenheit. When our body is exposed to temperatures higher than this level such as the hot tub water, the core temperature rises as well. A feverish state in which a person feels dizzy and nauseous can result from a higher core temperature.

In addition, a higher body’s core temperature also leads to low blood pressure, then the heart has to beat faster to pump blood throughout the body.

Lastly, staying in the hot tub for too long causes dehydration since a person is unaware that they are dehydrated while sitting in the hot tub water.

Furthermore, the body begins to sweat in order to lower its core temperature, which can exacerbate the body’s dehydrated condition.

How to know you have stayed in the hot tub for too long?

hot tub overexposure

How do you know when you have spent too much time in the hot tub and need to get out? If you are experiencing one or more of the following symptoms, chances are you have overstayed your time in the hot tub and it’s time you got out of it to avoid negative effects of hot tubs:

  • Dizziness
  • Fever
  • Confusion
  • Breathlessness
  • Skin irritation
  • Burning sensation
  • Vomiting
  • Dehydration
  • Headache
  • Fatigue or weakness
  • Faster or slower heart rate
  • Sweating heavily or not at all

How long should you stay inside a hot tub?

A rule of thumb for the appropriate period to stay in a hot tub is from 15 to 30 minutes. But this optimal time depends on some important factors.


The highest temperature that you set for your hot tub can play an important role in the maximum time you can stay inside it. The water temperature and the longest amount of time you should spend in your hot tub are not proportional.

Therefore, if you want to stay inside it for a longer period of time, you should reduce the water temperature by several degrees.

External environment

Your safe period in the hot tub also depends on the external environment. The hotter the weather, the easier your body can be overheated. By contrast, on very cold days, your body temperature may drop too fast, which can lead to dizziness.

So you should take the outdoor temperature and weather into consideration when you use the hot tub in order to avoid hot tub overexposure.


A number of health conditions such as heart diseases or pregnancy may prevent you from soaking in a hot tub or you should only stay for short sessions.


How much of your body stays underwater also decides the maximum length of time you should soak for. The deeper you go in, the shorter soak you should enjoy continuously.

Set a timer to ensure a safe duration

There are some tips to help you enjoy your hot tub safely.

Firstly, when planning to enjoy your quality hot tub time, you should do it with the presence of at least another person. So, in case of dizziness and lightheadedness, someone will be there to help you or call for help.

Additionally, you can set a timer for your hot tub (between 30 and 45 minutes) so that it starts to reduce the water temperature after that period.

Moreover, you can divide your hot tub time into small sessions: walking in and out of the hot tub to enjoy a glass of water or to chitchat with your friends.

Last but not least, you should keep water leveling your waist or chest for your body to dissipate the heat more effectively. You can do this with the help of the hot tub’s built-in seats and cushions which allow you to comfortably sit up and keep your torso out of the water.

Keep these things in mind

negative effects of hot tubs

Before soaking in the hot tub, consult your doctor if you have any medical history or health problems that require medical attention such as diabetes or circulatory issues. When sitting in a hot tub, people with high blood pressure or heart issues should be cautious.

Other tub users should practice cautions are pregnant women and children because the hot water can be harmful to their health.

It is recommended that the temperature of the hot tub water they use should not go over 102 degrees Fahrenheit and their maximum soaking time is 10 minutes.

The Association of Pool and Spa Professionals advises that children under the age of 12 limit their stay in a hot tub to 5 minutes at 104 degrees Fahrenheit. Longer soaks of up to 15 minutes are acceptable if the water temperature stays from 98 to 104 degrees Fahrenheit.

One helpful tip is using higher hot tubs’ “jump seats” in order to prevent the kids from immersing their whole body underwater. By contrast, children under the age of 5 should not be allowed to use a hot tub because their bodies are unable to handle the high-temperature water.

In addition, skin or seasonal allergy sufferers can experience worse conditions since the heat can worsen some skin conditions. Therefore, if your skin is sensitive and prone to allergies, you should seek advice from your physician regarding whether a hot tub would be a good idea for your skin.

Final words

Hot tubs can be a great way for relaxation and unwinding but spending too much time inside hot tubs can result in undesirable outcomes such as health issues relating to hot tubs too long symptoms which can be lethal.

Therefore, it’s recommended that you should not stay inside a hot tub for over 20-30 minutes. A good rule of thumb is between 15 and 20 minutes, which depends on some important factors (temperature, environment, health, and depth).


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