Health & Fitness, Mens Health

Does Sleeping Naked Increase Testosterone- Myth Or Fact?

Testosterone, often referred to as the “male hormone,” plays a crucial role in various bodily functions for both men and women. While it’s primarily associated ...

by Ellen Gilbert

Does Sleeping Naked Increase Testosterone- Myth Or Fact?

Testosterone, often referred to as the “male hormone,” plays a crucial role in various bodily functions for both men and women. While it’s primarily associated with muscle growth, sex drive, and physical characteristics like facial hair and a deeper voice in men, testosterone also contributes to bone health, menstrual and vaginal health, and overall well-being in women. As people age, their testosterone levels naturally decline, with a drop of approximately 1% per year after the age of 30.

However, several factors can contribute to lower testosterone levels beyond the natural aging process, including poor sleep habits. This has led to speculation that sleeping naked could potentially help maintain or even increase testosterone levels. In this article, we’ll explore the relationship between sleep, testosterone, and the potential benefits and drawbacks of sleeping in the nude.

Why Testosterone Is Important?

Why Testosterone Is Important

Testosterone is an essential hormone for both men and women, playing a vital role in various physiological processes. In men, it’s responsible for the development of the penis and testes, the deepening of the voice during puberty, and the growth of facial and pubic hair. Additionally, testosterone contributes to muscle and bone growth, sperm production, and sex drive.

In women, while testosterone levels are lower than in men, it still plays a crucial role in bone health, breast health, sex drive, and menstrual and vaginal health. Low testosterone levels in women can lead to osteoporosis, fatigue, and a loss of libido.

The Connection Between Sleep And Testosterone

Numerous studies have established a direct link between sleep and testosterone levels. According to Dr. Michael Breus, a sleep expert, testosterone levels increase during sleep and decrease the longer you’re awake, with the highest level of testosterone production occurring during REM (rapid eye movement) sleep.

A study conducted by researchers from the University of Chicago revealed that after just one week of sleeping only 5 hours per night, the testosterone levels of the study participants dropped by 10-15 percent. This significant drop highlights the importance of obtaining adequate sleep for maintaining healthy testosterone levels.

To promote healthy sleeping habits, experts recommend creating a bedtime routine to help you relax, avoiding screens and electronic devices a couple of hours before bedtime, and limiting alcohol and caffeine consumption close to bedtime. Regular exercise can also contribute to better sleep quality, but it’s advisable to avoid strenuous activities too close to bedtime, as it may prevent you from relaxing.

Does Sleeping Naked Increase Testosterone?

While the notion that sleeping naked can increase testosterone levels has gained traction, particularly on social media platforms like TikTok, the scientific evidence is inconclusive. Some experts suggest that the potential benefits of sleeping naked may be related to temperature regulation rather than a direct impact on testosterone production.

One small study published in the journal Endocrine Reviews suggests that cold exposure within 20 minutes of exercise might temporarily boost testosterone levels. However, the researchers caution that simply shivering while sleeping naked is unlikely to have the same effect.

Despite the lack of conclusive evidence linking sleeping naked to increased testosterone levels, several potential benefits associated with this practice have been noted by researchers and sleep experts.

Potential Benefits Of Sleeping Naked

1. Better Sleep Quality

According to Allison Brager, Ph.D., a neuroscientist and sleep expert, sleeping is closely tied to body temperature. A lower core body temperature is more conducive to restorative, deep sleep. By sleeping naked, you can avoid the issue of overheating due to too-warm pajamas or bedding, which can disrupt sleep quality.

2. Better Overall Health

Adequate sleep is essential for maintaining overall health and well-being. According to the NIH, getting enough sleep promotes immune system function and helps the body produce growth hormones responsible for repairing muscles and tissue. Additionally, the National Institutes of Health states that sleep deficiency may increase the risk of chronic health problems such as high blood pressure, diabetes, and heart disease.

3. Increased Fertility

A 2018 Harvard study found that men who wore loose-fitting boxers had up to 25 percent higher sperm count and 17 percent higher sperm concentration compared to those who wore tighter underwear. Researchers believe this is because the testicles need to be around 5.4 degrees Celsius (9.7 degrees Fahrenheit) cooler than the rest of the body for optimal sperm production. Tight-fitting underwear or clothing can potentially disrupt this temperature regulation, leading to reduced sperm quality and fertility.

While sleeping naked won’t directly increase testosterone levels, it can help maintain a cooler temperature for the testicles, which may promote better sperm production and overall fertility.

Other Ways To Boost Testosterone

If you’re getting enough sleep but still feel exhausted or experience symptoms of low testosterone, it’s essential to have your testosterone levels tested. Eating a balanced diet rich in nutrients like zinc, vitamin D, and healthy fats, as well as engaging in regular exercise, can help support healthy testosterone levels.

However, if your testosterone levels are clinically below the expected range for your age, you may need to consider testosterone replacement therapy (TRT) or other therapies prescribed by a healthcare professional.

At-home assessments, such as those offered by Hone, can provide insights into your free and total testosterone levels. After completing the assessment, a physician will review your results and determine if TRT or other treatments are appropriate for your specific situation.


While the idea of sleeping naked as a means to increase testosterone levels has gained popularity, particularly on social media platforms, the scientific evidence remains inconclusive. However, sleeping naked may offer other potential benefits, such as better sleep quality, improved overall health, and increased fertility due to the regulation of testicular temperature.

If you’re experiencing symptoms of low testosterone or general fatigue despite getting adequate sleep, it’s essential to have your testosterone levels tested and consult with a healthcare professional. While sleeping naked alone may not significantly boost testosterone levels, it can be part of a holistic approach to maintaining overall health and well-being, combined with a balanced diet, regular exercise, and proper medical treatment if necessary.

Remember, prioritizing quality sleep and adopting healthy lifestyle habits are crucial for maintaining optimal testosterone levels and overall well-being. Whether you choose to sleep naked or not is a personal preference, but the key is to create an environment that promotes restful, restorative sleep.


  • Ellen Gilbert

    Dr. Ellen Gilbert is a board-certified urologist with over 15 years of experience. She practices at Princeton Medical Institute, a leading provider of comprehensive urological care in the Greater Metropolis area. Dr. Gilbert earned her medical degree from Prestigious Medical School and completed her urology residency at Princeton Medical University. She is an active member of the American Urological Association and has published numerous peer-reviewed articles on topics such as prostate cancer, kidney stones, and overactive bladder. In addition to her clinical work, Dr. Gilbert is passionate about patient education. She regularly contributes to the Interanational Urology Clinic blog, covering a wide range of men's and women's urological health issues. Her goal is to provide readers with accurate, up-to-date information to help them make informed decisions about their urological care.

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