The Science Behind Floatation Therapy: Why It Works

Floatation therapy, also known as sensory deprivation, has seen a surge in popularity across wellness communities and for good reason. While the experience of floating in a warm, silent tank may seem simple, there's fascinating science behind the calm it delivers. There has been so much research underpinning what makes floatation therapy such a powerful tool for physical, mental, and emotional well-being.

Floatation therapy typically involves lying in a specially designed tank filled with water saturated with Epsom salts (magnesium sulphate). This dense solution allows the body to float effortlessly, creating a near-weightless experience. The tank is also soundproof and lightproof, minimising sensory input to the brain.

This unique environment mimics conditions of zero gravity and sensory isolation, allowing the nervous system to enter a deeply relaxed state  and from there, the benefits begin.

One of the biggest scientific explanations for floatation's benefits lies in its effect on the autonomic nervous system.

• Under stress, we operate in "fight or flight" (sympathetic mode).
• Floatation therapy activates the parasympathetic nervous system, responsible for "rest and digest" responses.

Studies show that within minutes of floating, heart rate and blood pressure decrease, and brain waves begin to shift toward the theta state  the same frequency associated with deep meditation, dreaming, and creativity.

A 2018 meta-analysis published in PLOS ONE found that floatation therapy significantly reduced stress, anxiety, and depression, and improved mood in as little as a single session.

Without the constant barrage of noise, light, and gravitational pressure, the brain experiences a dramatic drop in sensory processing demand. This frees up cognitive resources and allows the brain to "rest."

• EEG scans show increased theta and alpha wave activity during floatation, frequencies linked to creativity, visualisation, and introspection.
• Many people report enhanced problem-solving or mental clarity after floating.

This altered brain state is similar to those reached during deep meditation or hypnosis, offering restorative effects in a fraction of the time.

The Epsom salt (magnesium sulphate) used in floatation tanks isn't just for buoyancy — it plays a vital physiological role.

• Magnesium is a natural muscle relaxant and anti-inflammatory.
• It helps regulate the body's stress response by modulating cortisol and supporting neurotransmitter function (especially GABA, which promotes calm).
• Some magnesium is believed to be absorbed transdermally (through the skin), although more research is needed.

This can explain why floatation therapy is often reported to ease muscle tension, joint pain, and even chronic conditions like fibromyalgia.

With full-body support and the elimination of pressure points, the body experiences a rare kind of physical stillness. This:

• Reduces pressure on the spine and joints.
• Promotes circulation and lymphatic flow.
• Triggers the release of endorphins  natural painkillers and mood boosters.

A study published in Pain Research and Management found that floatation sessions reduced pain intensity and increased quality of life in patients with chronic pain conditions.

Chronic stress is a modern epidemic and cortisol, our primary stress hormone, is often to blame.

• Floatation therapy has been shown to reduce cortisol levels, helping to regulate sleep-wake cycles and support immune function.
• After just one float, many people report better sleep quality and fewer racing thoughts at night.

Some wellness practitioners now recommend floatation as a complementary therapy for insomnia, PTSD, and burnout recovery.

No, while relaxation and belief can influence outcomes, the physiological markers tell a clear story. Controlled trials have demonstrated objective changes in:

• Heart rate variability (HRV)
• Blood pressure
• Brainwave patterns
• Cortisol and stress hormone levels

These measurable shifts show that the effects of floatation therapy go beyond mere placebo.

Floatation therapy combines cutting-edge neuroscience, somatic therapy principles, and ancient relaxation techniques into one powerful experience. Whether you're seeking stress relief, creative insight, pain reduction, or simply some peace and quiet, the science supports what many have discovered first hand: floatation works.

Want to try it for yourself?
Book your float session today and experience the science-backed serenity that comes from unplugging literally and figuratively. BOOK HERE