Float Therapy: Sensory Deprivation Tanks & the Science of REST | I Want To Health You
✨ Wellness Modalities

🛁Float Therapy

Float therapy eliminates virtually all sensory input by suspending you in body-temperature Epsom salt water in complete darkness and silence — producing profound relaxation, pain relief, and altered states unavailable through other means.

Sensory deprivation REST Magnesium Stress reduction Pain relief Theta brainwaves
Water temp93.5F — matches skin temp
Salt content~800-1000 lbs Epsom salt
Session length60-90 minutes
BuoyancyFully supported — zero gravity
BrainwavesTheta state
EvidenceGrowing but still limited

Float therapy (Restricted Environmental Stimulation Therapy — REST) involves lying in a float pod filled with highly concentrated Epsom salt solution at skin temperature. The extreme buoyancy supports the body completely, eliminating the gravitational stress that muscles spend 70% of their energy managing. Complete darkness and silence eliminates virtually all external sensory input.

The result is a state almost impossible to achieve otherwise: profound physical relaxation without mental effort. The body enters a state physiologically similar to deep meditation — with theta brainwave activity, dramatically reduced cortisol, and complete muscular relaxation — without the years of practice required to achieve this through seated meditation.

The scientific research on float therapy is growing. The most robust evidence covers: pain reduction in fibromyalgia and chronic pain; anxiety and stress reduction; blood pressure reduction; and athletic recovery through magnesium absorption and muscle relaxation.


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The Science

Key mechanisms and what the research shows
Theta waves
Meditative brain state
Float tanks produce theta brainwave dominance — the state between sleep and waking associated with creativity, insight, and deep relaxation
Cortisol
Significant reduction
Float sessions reduce cortisol and adrenaline significantly — with effects persisting for days after the session
Magnesium
Transdermal absorption
Epsom salt (magnesium sulfate) may be absorbed through the skin during floating — supporting muscle relaxation and systemic magnesium levels
Proprioception
Zero gravity state
Eliminating gravity removes constant proprioceptive input from muscles and joints — producing a sense of bodylessness that profoundly reduces muscle tension
Default mode
Reduced rumination
Float REST reduces default mode network activity — the ruminative brain state associated with anxiety and depression
Endorphins
Natural pain relief
Float sessions produce significant endorphin release — contributing to the post-float sense of euphoria and wellbeing

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Health Benefits

1
Pain and fibromyalgia relief
  • Seven sessions of float REST reduced fibromyalgia pain by 25-28% with effects persisting for weeks
  • Chronic pain patients consistently report significant pain reduction during and after float sessions
  • The zero-gravity environment eliminates postural muscle tension that chronically compresses joints

The mechanism: Float REST addresses chronic pain through multiple mechanisms: zero-gravity eliminates gravitational joint compression; complete muscle relaxation reduces myofascial tension; cortisol reduction decreases inflammatory pain sensitivity; and endorphin release provides natural analgesia.

📚 European Journal of Integrative Medicine, PLOS ONE
2
Anxiety and stress reduction
  • Float REST reduces state anxiety by 30-40% in clinical trials for anxiety disorder
  • Blood pressure and cortisol reductions from float sessions persist for days
  • People with chronic stress report float as one of the most effective interventions they have experienced

The mechanism: Complete elimination of sensory input removes all stimuli that maintain the sympathetic nervous system in a vigilant state. Without external demands, the nervous system reflexively shifts to deep parasympathetic dominance — comparable to what experienced meditators describe as deep absorption states that typically take years of practice to access.

📚 Journal of Environmental Psychology, BMC Complementary Medicine
3
Athletic recovery
  • Elite athletes including Stephen Curry and multiple NFL teams use float tanks for recovery
  • Zero-gravity environment accelerates muscle recovery by eliminating postural strain that continues even during rest
  • Post-float perception of muscle soreness and fatigue is significantly reduced

The mechanism: During normal rest, gravity continues to compress joints and requires postural muscles to maintain baseline tone. Float REST eliminates this entirely — allowing muscles to completely relax in a way normal rest cannot achieve.

📚 Performance-focused float research and preliminary athletic studies

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How to Do It

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First session tips
Arrive early, shower before floating, bring earplugs if desired. Surrender to the experience — the first 20 minutes feel strange; the last 40 minutes are typically extraordinary.
Optimal duration
60 minutes is the minimum for full benefits. 90 minutes is the most commonly reported optimal length. Theta state alters time perception — sessions feel shorter than they are.
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Frequency for conditions
For fibromyalgia and chronic pain: weekly sessions for 6-8 weeks produces the best documented outcomes. Maintenance: monthly thereafter.
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Mental approach
Treat float as meditation. Using the time for visualization, creative problem-solving, or simply observing arising thoughts produces deeper benefits than trying to force a particular state.
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Hydration
Drink water before floating. The heat and slight osmotic effects can cause mild dehydration.
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Home tanks
Home float pods ($3,000-12,000) become cost-effective for regular users vs studio prices of $60-100 per session.

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Recommended Products & Supplements

What supports Float TherapySome links are affiliate links — we may earn a small commission at no extra cost to you.
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Float Session at Local Studio
Find a float studio for an introductory session. Try 3 consecutive weekly sessions before judging on a single experience.
Coming Soon
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Magnesium Glycinate 400mg
Oral magnesium supports the same pathways as transdermal float magnesium — take daily for systemic optimization alongside floating.
View on Amazon
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Ashwagandha 600mg
Reduces baseline cortisol that float tanks also address — a synergistic stress-reduction combination.
Coming Soon

Safety & Considerations

  • Those with claustrophobia should inform the studio — most tanks have options to float with lid open or lights on during adjustment.
  • Avoid floating with open wounds, skin conditions, or after recent hair dyeing — the salt solution irritates damaged skin.
  • Do not float under the influence of alcohol or recreational drugs.
  • Those with severe mental health conditions, epilepsy, or kidney disease should consult their physician before float therapy.

This guide is for informational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider before making changes to your health routine.


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