Key takeaways
- PTSD can keep the body on high alert long after a trauma, with flashbacks, nightmares, poor sleep and constant tension.
- Studies show floating can reduce anxiety and stress, including in people with anxiety and stress-related disorders, but research on PTSD itself is very limited.
- Floating is not a PTSD treatment; it can complement trauma-focused therapy with a qualified professional.
Quick answer: Floating may help some people with PTSD feel calmer, sleep better and carry less tension, because it offers a quiet, safe space where the stress response can settle. Research on floating and anxiety is encouraging, but studies on PTSD specifically are very small. Floating should complement, not replace, trauma-focused therapy and the care of a doctor or psychologist.
What PTSD is
Post-traumatic stress disorder (PTSD) can develop after someone experiences or witnesses a frightening or dangerous event, such as an accident, assault, disaster, combat or the sudden loss of a loved one. Fear during danger is a normal survival response. In PTSD, that alarm system stays switched on long after the danger has passed.
- Reliving the event through flashbacks or intrusive memories, often with a racing heart or sweating
- Nightmares and difficulty falling or staying asleep
- Feeling constantly on edge, easily startled or irritable
- Avoiding reminders of the event, or feeling numb and losing interest in things once enjoyed
PTSD is treatable. Evidence-based options include trauma-focused psychotherapies such as cognitive processing therapy, prolonged exposure and EMDR, and sometimes medication. If you think you may have PTSD, please speak with a doctor or mental health professional.
How floating may help
- Lowering everyday stress and arousal: floating removes light, sound and gravity, giving an over-alert nervous system a rare chance to rest. See how floating reduces stress.
- Easing anxiety: Feinstein and colleagues (2018) found that a single float reduced anxiety and improved mood in people with a range of anxiety and stress-related disorders. Jonsson and Kjellgren (2016) reported reduced symptoms in people with generalised anxiety disorder after a series of floats.
- Supporting sleep and body tension: many people with PTSD also live with insomnia or chronic pain, and floating is often reported to help with both. See floatation therapy for pain.
- A calmer base for therapy: feeling more settled can make it easier to engage with the work of trauma-focused therapy.
What the research says
Direct research on floating for PTSD is scarce. Kjellgren and colleagues (2013) published a single-case study of a person with several diagnoses including PTSD, who described less tension, a strong sense of safety and better quality of life over a series of floats. Many veterans and trauma survivors share similar personal accounts, but a single case and personal stories cannot show that floating works for everyone.
The stronger evidence is for anxiety and stress more generally. You can read more in people with anxiety find relief in float tanks.
Floating safely with PTSD
- Talk with your therapist or doctor before you start, and keep up your current treatment and medication.
- Darkness and enclosed spaces can feel triggering for some people. You can leave the light on, keep the door or lid open, and get out at any time.
- Start with a shorter or standard session and build up gradually; 60–90 minutes is typical.
- Let our team know if you have any concerns. Never float under the influence of alcohol or drugs.
Note: This page is for general information. Float therapy supports wellbeing but does not replace diagnosis or treatment by a doctor. If you have a medical condition, ask your doctor before floating.
Try it at Ōmni Space. Float Vietnam’s float rooms are at 16C Quoc Huong, Thao Dien, Ho Chi Minh City (Saigon), open daily 9:00–21:00. Book a float or read the float therapy FAQ.
Frequently asked questions
Can float therapy help PTSD?
Floating is not a treatment for PTSD, but it may help some people feel calmer, sleep better and carry less tension. It works best as a complement to trauma-focused therapy with a qualified professional.
Is there research on floating for PTSD?
Research specific to PTSD is limited to a published single-case study and personal reports. Larger studies show floating can reduce anxiety and stress, including in people with anxiety and stress-related disorders.
What if the dark tank feels uncomfortable?
You stay in control: you can keep the light on, leave the door or lid open and end the session whenever you like. Many people start this way and dim the light once they feel safe.
