Sound Baths, Red Light Therapy, and Other Fringe-to-Mainstream Wellness Practices

Sound baths involve sustained exposure to acoustic vibrations — typically produced by Tibetan singing bowls, crystal bowls, gongs, or tuning forks — while participants rest in a reclined position. The practice draws on traditions from Himalayan and South Asian cultures and has grown substantially in Western wellness spaces over the past decade.

Scientifically, the picture is cautiously promising but far from conclusive. Small studies, including one published in the Journal of Evidence-Based Integrative Medicine, have found self-reported reductions in tension, anxiety, and fatigue following sound meditation sessions. Researchers hypothesize that slow, layered acoustic frequencies may help induce a relaxation response similar to other mindfulness-based modalities.

However, most available studies are small, lack control groups, and rely heavily on subjective self-reporting. Sound baths should be understood as a complementary relaxation practice rather than a treatment for any diagnosed condition.

Red light therapy — also called photobiomodulation or low-level laser therapy — uses specific wavelengths of red and near-infrared light to penetrate skin tissue. The proposed mechanism involves stimulating mitochondrial function in cells, which proponents suggest may support tissue repair, reduce inflammation, and improve skin appearance.

Of all the modalities discussed here, red light therapy arguably has the broadest clinical research base. The FDA has cleared certain red light devices for limited applications, including treating musculoskeletal pain and specific dermatological conditions. Research on wound healing and joint pain has shown measurable effects in some controlled settings.

That said, many consumer claims — particularly around hair regrowth, athletic performance, and cognitive enhancement — range from preliminary to unsubstantiated. The quality of evidence varies significantly by application, and not all devices marketed to consumers deliver clinically relevant dosages. Anyone considering red light therapy for a specific health concern should discuss it with a medical professional first.

Float therapy involves lying in a shallow, enclosed tank filled with highly concentrated Epsom salt solution, effectively eliminating external sensory input — light, sound, and gravitational pressure on joints. Sessions typically last 60 to 90 minutes.

Research suggests float therapy may reduce subjective stress and anxiety, with some studies noting measurable decreases in cortisol levels and self-reported pain. A 2018 study published in PLOS ONE found that a single flotation session produced significant reductions in anxiety, stress, depression, and pain across a mixed participant pool.

The research base remains modest in scale, and most studies involve participants who self-selected into float therapy — an important limitation. It is generally considered low-risk for healthy adults, though individuals with certain psychological conditions, open wounds, or skin sensitivities should consult a provider before trying it.

Unlike traditional saunas that heat ambient air, infrared saunas use infrared light panels to warm the body directly at lower air temperatures. Advocates cite benefits ranging from cardiovascular support to detoxification and improved sleep.

Some observational evidence — notably from long-term Finnish sauna studies — associates regular sauna use with reduced cardiovascular risk, though those studies largely involved conventional rather than infrared saunas. Research specific to infrared saunas is more limited, with some small trials suggesting benefits for blood pressure and subjective fatigue in people with certain chronic conditions.

The "detox" narrative often associated with sauna use is frequently overstated; the liver and kidneys handle most detoxification functions in the body. People with cardiovascular conditions, those who are pregnant, or individuals on medications affecting heat tolerance should seek medical guidance before using an infrared sauna regularly. For a similarly evidence-aware look at another heat-and-cold modality, see what research shows about cold plunging.

Structured breathwork — including techniques like diaphragmatic breathing, the physiological sigh, and practices derived from traditions such as pranayama — has attracted growing scientific attention for its potential effects on the autonomic nervous system. Unlike some other modalities on this list, breathwork is accessible, low-cost, and carries minimal risk for most healthy adults.

Studies have found that intentional, slow breathing can shift the balance between sympathetic (stress-activated) and parasympathetic (rest-and-digest) nervous system activity, reducing heart rate and self-reported anxiety. Research from Stanford published in 2023 found that certain brief breathwork protocols produced greater reductions in anxiety and improvements in mood compared with mindfulness meditation over the same duration.

It is worth distinguishing evidence-backed breath regulation exercises from more dramatic commercial programs that make sweeping health claims. Individuals with respiratory conditions, a history of panic disorder, or cardiovascular concerns should consult a provider before beginning intensive breathwork regimens.

Grounding — or earthing — is based on the premise that direct physical contact with the earth's surface (bare skin on soil, grass, or sand) allows the transfer of electrons from the earth to the body, which proponents claim reduces inflammation and promotes physiological balance.

A small body of research, including studies in the Journal of Inflammation Research, has reported associations between grounding and reduced markers of inflammation and improved sleep in limited samples. However, the evidence base is thin, heavily reliant on small pilot studies, and has attracted methodological criticism. The proposed electron-transfer mechanism remains scientifically contested.

Time outdoors — with or without a grounding framework — is associated with well-documented benefits for mood and stress. The practice of spending time in green spaces has stronger supporting research, as explored in our coverage of forest bathing and nature therapy. Grounding itself warrants more rigorous study before firm conclusions can be drawn.