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The True REST™ Float Spa was started by founders Nick and Holly Janicki in 2009

located at:  1860 E Warner Rd Suites 102 & 101 in Tempe, Arizona 85284. 

You can reach them at:

Why the Floatation Tank? 


John C. Lilly, a medical practitioner, and neuro-psychiatrist developed the flotation tank in 1954. During his training in psychoanalysis at the US National Institute of Mental Health (NIMH), Lilly commenced experiments with sensory deprivation. In neurophysiology, there had been an open question as to what keeps the brain going and the origin of its energy sources. One hypothesis was that the energy sources are biological and internal and do not depend upon the outside environment. It was argued that if all stimuli are cut off to the brain then the brain would go to sleep. Lilly decided to test this hypothesis and, with this in mind, created an environment that totally isolated an individual from external stimulation. From here, he studied the origin of consciousness and its relation to the brain.

Peter Suedfeld and Roderick Borrie of the University of British Columbia began experimenting on the therapeutic benefits of flotation tank usage in the late 1970s. They named their technique “Restricted Environmental Stimulation Therapy” (REST).

Tank design and usage

In the original tanks, people were required to wear complicated head-masks to breathe underwater and uncomfortable tight clothing that constricted the blood flow in certain areas, but the mask and clothing detracted from the isolation experience. The tight fit of the mask seal around the face and the retention strips wrapping around the back of the head were uncomfortable in long sessions. The constant hissing of the air valves and bubbling of exhaust air out of the mask prevented the possibility of silence. The faceplate of the mask was typically solid black for visual isolation, but then the tank user needed help entering and leaving the isolation tank since the mask blinded them. The tight neoprene clothing was extremely uncomfortable in sensitive areas such as the genitalia and constricted blood flow and mobility in other areas.

In newer tanks, Epsom salt is added to the water in the tank to increase the density of the water so that the subject floats with the face above the water. However, since the ears are submerged when the subject is in a relaxed position, hearing is greatly reduced, particularly when earplugs are also used. When the arms float to the side, skin sensation is greatly reduced because the air and water are the same temperatures as the skin, and the feeling of a body boundary fades. The sense of smell is also greatly reduced, especially if the water has not been treated with chlorine.

Physical Benefits

  • Improves athletic performance and helps prevent sports injuries, speeds healing process.

  • Decreases the production of Cortisol, ACTH, Lactic Acid, and Adrenaline.

  • Increases the production of endorphins.

  • Quickens rehabilitation and recovery.

  • Relieves pain from arthritis, migraines, injuries, etc.

  • Boosts immune function.

  • Improves circulation.

  • Increases distribution of oxygen and nutrients.

  • Reduces blood pressure, pulse, heart rate and oxygen consumption.

General Well Being

  • Promotes total calm and peaceful relaxation.

  • Eliminates fatigue and jet lag.

  • Improves sleep.

  • Alleviates stress (mental and physical).  

  • Energizes, rejuvenates, and revitalizes.

Left/Right Brain Synchronization

  • Shifts brain waves from the Beta to Alpha, Theta, and even Delta.

  • Better mental clarity and alertness.

  • Increases creativity and problem-solving ability.

  • Intensifies the acuteness of all the senses.

  • Accelerates learning.

  • Diminishes depression, anxiety, and fear.

  • Facilitates freedom from habits, phobias, and addictions.

Where Colwyn Likes to Float

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