Salt Floating Tank
Floating is the scientifically proven process of relaxing and re-setting the brain and body through REST (restricted environment stimulation technique) and sensory deprivation, originally discovered by Neurophysicist Dr John C Lilly. Be wary that all the "supporting evidence" for sensory deprivation that you'll see from these businesses seem to be very beneficial for them, financially—e.g. "You should float regularly for optimal results." Still, if you have the money and don't have claustrophobia, it can't hurt to check out.
If you have the upper body strength to lift yourself out of your chair and into bed, for example, you will likely be able to lift yourself out of your chair and into (a) a chair in the shower, and (b) over the float tank door threshold, which is 18 inches off the floor and approximately three feet wide.
The Float SPAŽ cabin's technical system automatically keeps the internal air and water temperature at an ideal constant value of 36⁰ C (96.8⁰F), ensuring the user of the cabin will not feel cold, and the water's salt content is 30%, allowing the body to float effortlessly on the surface.
Flotation requires a soundproof and lightproof fiberglass enclosed float capsule (sometimes referred to as float tank or spa - approximately 8 feet long by 4 feet wide by 4 feet high) filled with heated water (to skin temperature of 94-95 degrees F) and a very high concentration (800 lbs.) of Epsom Salts.
D'Souza seemed skeptical of the sensory deprivation tank business, especially the capacity in which I was using it. He notes that some people are more prone to hallucinations, which can be measured by scales like the Wisconsin Psychosis Proneness Scale and the Schizotypal Personality Questionnaire People who "score" higher on these tests are more likely to believe in phenomena like alien abductions, and are often more suggestible, he noted, and he figured these are probably more likely to use sensory deprivation tanks recreationally.
The novelty and unawareness of what to expect is no longer there and you can dive deeper into the actual experience instead of worrying about superficial things like stinging salt or when is the music coming on. This practice of floating is truly the art of letting go, something we all could do better at. Eventually you'll have to let everything go in this life, no body makes it out alive 
. So consider it something different, something deeper, perhaps inquire as to why you feel uncomfortable simply being just with yourself, alone, and unstimulated.
According to Araaragot, the flotation cabin is filled with a dense 75 percent solution of Epsom salts and body temperature water providing a combination of exclusive skin care and zero Flotation Therapy gravity experience.” Sessions, they say, can take place in complete darkness and silence,” or can include audio, high-frequency wave effects or light and color impulses.