We lead with what the evidence confirms, not what it doesn't. This page summarises the peer-reviewed research on flotation REST.
IMPORTANT: We do not claim that flotation REST treats or cures any condition. The correct clinical framing is: float as an adjunct for ANS downregulation.
Flux, M. et al. (2022). Effects of flotation-REST on the autonomic nervous system. Frontiers in Neuroscience.
Significant increases in high-frequency HRV during floating versus passive relaxation.
Strong — randomised, peer-reviewed, Laureate Institute for Brain Research.
Supports the use of float as an ANS regulation adjunct.
Bood, S.Å. et al. (2006). Flotation-REST and fibromyalgia.
12-session protocol produced significant reductions in self-reported pain, depression, and anxiety in fibromyalgia patients. Effects persisted at 4-month follow-up.
Moderate — controlled study, relevant patient population.
Supports structured float protocols as an adjunct for fibromyalgia. Not a standalone treatment. See Hannover RCT limitation below.
Feinstein, J.S. et al. (2018). Short-term anxiolytic effect of flotation-REST. PLOS ONE.
Single 60-minute float produced significant reductions in self-reported anxiety and muscle tension in a clinically anxious population.
Strong — large sample (n=50), randomised.
Supports acute anxiety and stress reduction as a single-session outcome. Not evidence of long-term treatment efficacy.
van Dierendonck, D. & Te Nijenhuis, J. (2005). Flotation REST as a stress-management tool: A meta-analysis.
Meta-analysis of 27 studies. Float consistently outperformed rest on stress and pain reduction.
Strong — meta-analysis is highest level of evidence.
Broadest evidentiary foundation for stress and pain applications.
Loose, L.F. et al. (2021). Flotation REST in chronic pain management: A Randomized Clinical Trial. JAMA Network Open.
5 flotation REST sessions produced no statistically significant long-term benefit for chronic pain compared to placebo. Short-term relief was noted in both groups.
Strong RCT — 99 participants, credible placebo condition, Hannover Medical School.
IMPORTANT LIMIT: Flotation REST cannot be positioned as a standalone long-term chronic pain treatment. Position as adjunct only — paired with manual therapy or other interventions.
This page is provided for informational reference only. The Nesofloat Tank is not a medical device and makes no therapeutic claims. Float sessions are not a medical treatment and are not a substitute for professional medical care. The studies cited are independent peer-reviewed research. Clinical practitioners should apply professional judgment when incorporating flotation REST into patient protocols.