Is it necessary to protect scrotum, genitalia, testicles area while on FiR Mat?

Healthy patients without diabetic neuropathy or other loss of temperature sensitivity should remember that there are still some oversensitive to heat parts of their bodies that should never be on the mat heating area unless the health professional prescribes it.
Head and face should always be out of the direct contact or influence of heating devices. Our brain is susceptible to heat and should be protected first of all. 
Also, if fertility is supported, it is better to avoid warming testicles and genitalia zones completely. 
Sleeping on the mat on low-level heat, a hot bath once in a while, or a hot shower shouldn't do any harm.
But applying heat directly to the testicular area by using a heating pad or infrared mat on high heat should be avoided in case it is not voluntary contraception ( which also should be controlled by the health professional ).
If you lay on your back, the Hot Stone Mat FIR radiant rays should not be able to penetrate deep enough to make any harm to the genital zone. 
Really rays penetration is 2-10 mm for monochrome Red Light ( Photon function LEDs on our Bio-Stimulation Mats ), and Far and Mid InfraRed rays penetrate only several inches. 
It is the bio-resonance effect that the body cells start to burn calories and produce more heat themselves (mitochondria activity). Even several hours after the procedure on the mat, the body core temperature is elevated, which results in better immunity and improved metabolism. We speak about 6-8 inch penetration based on the improved circulation. 
Thermoregulation systems of our body function move the hot blood and lymph away from the spots where the FIR rays are applied. It causes a temperature increase in larger zones due to heat distribution. Of course, the deeper we try to apply heat, the fewer results we have. But if you use a professional or single-size FIR Mat, you may achieve whole body hyperthermia. There are even special clinics in Switzerland using this method for healing cancer.
Famous Japanese oncologist Dr. Nobuhiro Yoshimizu in his book “4-th Treatment For Medical Refugees or Thermotherapy in a 21-st century” stated that they had the most effective results if the tumors were closer to the body surface. It was more difficult to treat tumors located deeper in the body.

In Japan, they used Richway Biomat for their studies; it is similar to our Amethyst Mats without additional functions. They also used a pair of mats for high intensive “sandwiched” between mats thermotherapy for cancer patients. They did not protect genitalia zones at all.
Some customers sit on the mat from time to time as it may be helpful to avoid frequent night urination and heal prostatitis. If you do so, you should sit so that your testicles are not on the mat; you sit on the edge of the heating area.

The most important to protect the genitalia zone is if you lay on the mat on your belly.
Usually, two mats are used for the whole body experience, one under your leg zone and the other under your stomach, and you leave some space between them for the genitals.
You can use two mini mats for this procedure, or you can use one mini mat first under your legs and then under your upper body.
Or if you have a PRO mat, turn it 90 degrees and lay so that either your legs are on the mat or your torso and heat them one after another.

Another possibility is to make a non-permeable for the FIR Rays screen.
It can be done with a towel folded many times and covered with several layers of standard aluminum foil. It helps for short procedures. You can use this screen under the genitals area in both positions - on the back and the belly.
A cooling pad can also be used inside the towel to absorb heating rays.
Far Infrared Therapy is great for detox. If you sweat, your body excretes many wastes and toxins, and some of our customers reported that it was helpful for erectile dysfunction.
There are many reviews on Amazon about our products, but some customers do not like to publish their results.
But we had private reports from therapists using our mats for their patients, such as recreational athletes with steroid abuse-induced hypogonadism, who successfully used FIR Mat therapy to detox and reloaded the hormonal system. 
So, in case the mat is used with common sense, and correctly, it should work fine without any complications related to fertility.
Below is some more information about heat and fertility, which confirms that it is important to avoid heat stress on genitalia and scrotum zones. 
Most information is taken from MedLine and PubMed, the main searchable database of the U.S. National Library of Medicine (NLM) and the National Institutes of Health (NIH).
It is generally recognized that normal sperm production depends on a testicular temperature. Sperm is best produced at a temperature slightly below body temperature ( 4-5 C ).
The muscles around a male's scrotum involuntarily tighten if the man's body temperature drops, and they loosen, allowing the testes to hang if the body temperature rises.
This is the body's way of keeping the sperm at an ideal temperature. This thermoregulation method works fine if there is no excessive heat applied. 
The spermatozoid cells are heat sensitive, and the mean temperature in the testicles should be around 32-33°C and not 37 for this reason.
There is an assumption that scrotal and consecutively testicular temperature above 35 degrees C impairs spermatogenesis. Sperm production can be disrupted with increased temperature.
Some scientists consider that the reduction in fertility in men and the number of people needing medical help to conceive is linked to all the toxins that we find in our environment, especially the food, alcohol but it has also to do with the increasing heat applied to the testicles.
Due to a sedentary lifestyle and the fact that almost all men wear jeans or trousers, our bodies' thermoregulation may fail. 
The scrotal temperature was found.   to correlate with sedentary work position with a dose-effect association strongly 
The relation between daily activities and scrotal temperature.
A study involving a review of truck drivers working for a long time in a sitting position did not show semen quality decrease. But contraception via genital heat stress has been demonstrated with special hot sitting baths or insulating suspensors. There was also found a connection between cooling of genitals zone and improvement of semen quality.
Influence of genital heat stress on semen quality in humans.
There was a study in Korea for long time exposure of man to the heating floor which produces mainly conductive heat and some infrared rays, and it affected some participants sitting for 3 hours on the hot floor.
Changes in the scrotal temperature of subjects in a sedentary posture over a heated floor.
Some studies on rats showed that the increased scrotal temperature reversibly decreased testosterone production.
Effects of local heating of the testes on testosterone concentration in the jugular and testicular venous blood of rats and on testosterone production in vitro.
In the 90-s Medical science even started to investigate an increase in testicular temperature as a potentially reversible and safe contraceptive method for men. Some researches involving heating the testicles so that they cannot produce sperm suggested the exposure to high temperatures (116F) can affect fertility for months.  
One of the initial experiments resulted in partial infertility lasting more than four years. Initial experiments suggest it is effective and safe.
The potential of mild testicular heating as a safe, effective, and reversible contraceptive method for men.
Male contraception by hyperthermia
These contraceptive methods involving local hyperthermia of testicles used hot water applied to the scrotum, heat generated by ultrasound, heating pads, and artificial cryptorchidism (holding the testicles inside the abdomen) using specialized briefs.
There were even medical studies to see if this contraception is safe.
323 men diagnosed with Testicular cancer and 658 men without were studied to see if there was any correlation between developing cancer and higher scrotal temperatures. The main target was to investigate if hot tubs procedures, sauna use, tight shorts, and special thermal underwear could cause cancer. 
Results showed that of the men with Testicular cancer, fewer had used hot tubs and saunas than those without cancer. No association was found between testicular cancer and wearing tight-fitting underwear, jockey shorts, or wearing heat-resistant clothing on the job.
Elevated Intrascrotal temperature and the incidence of testicular cancer in non-cryptorchid men.
Really, most studies confirmed that our body thermoregulation works fine maintaining healthy temperature in the scrotum unless serious heat stress is applied, which should NEVER be done unless it is voluntary contraception.
It is important to remind yourself to always check for a better position when you sit on the mat or lay on your belly simply because our body temperature sensors do not feel the penetrative radiant heating rays from hot crystals, same as we feel conductive heat.

Remember that your mat's temperature is adjustable, and you can use the level that works best for you.

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