Sound healing is more than relaxation. It is a scientifically grounded practice that produces profound effects on body and mind through vibration, entrainment and brainwave influence. Here is how it works.
Entrainment: synchronising brainwaves
The central mechanism of sound healing is entrainment. When exposed to rhythmic sound waves, your brainwaves naturally synchronise with that frequency. Singing bowls typically resonate at frequencies that bring the brain into theta state (4-8 Hz) — the border between sleep and wakefulness. In this state, deep relaxation, creativity and emotional processing occur naturally.
Vibrations in the body
The human body is approximately 70% water — and water conducts sound excellently. The vibrations of singing bowls literally penetrate the body: cells, tissues and organs resonate along with them. This explains why people often describe sound healing as 'a massage from the inside'.
Cortisol and the nervous system
Studies show that regular sound healing sessions lead to a measurable reduction in cortisol — the primary stress hormone. At the same time, sound healing activates the parasympathetic nervous system: the 'rest and digest' mode. For people with chronic stress or burnout, this is particularly valuable.
Crystal singing bowls: why they are so powerful
Crystal singing bowls are made from quartz crystal with a high silica content. Silicon is also the basic building block of the human body. This explains why crystal singing bowls resonate so deeply with human physiology — more so than metal bowls or other instruments.
Sound healing and psychedelic ceremonies
At Stars Frequencies, sound healing is always part of the truffle ceremonies — and that is no coincidence. Music and sound guide the psychedelic experience, provide an anchor in difficult moments, open emotions and deepen the journey. Research from Johns Hopkins shows that music is one of the strongest predictors of the quality of a psychedelic experience.
Frequently asked questions
What is entrainment in sound healing?
Entrainment is the mechanism by which your brain waves synchronise with external sound waves. With singing bowls this moves towards theta state (4–8 Hz) — the state of deep relaxation and processing.
Who is sound healing suitable for?
Sound healing is suitable for almost everyone: from people with chronic stress and burnout to those who simply want to relax or meditate more deeply. There are very few contraindications.
Can you do sound healing at home?
Yes. With a singing bowl, koshi chimes or an online recording you can experience the benefits at home. For a deeper experience a live session or workshop is recommended.
What is a sound bath?
A sound bath is a meditative experience in which you lie back and bathe in sound waves from singing bowls, gongs or chimes. You do nothing — you simply receive. Sound bathing is growing in popularity in Amsterdam as a deep relaxation technique.
What is cosmic sound healing?
Cosmic sound healing refers to the use of singing bowls, gongs and chimes to reach deep layers of the nervous system. The vibrations resonate through cells and tissues — sound as a universal connecting element between body and consciousness.