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Writer's pictureKaren Ferguson

The Science Behind Hypnosis: How It Works


Hypnosis often carries a certain mystique, thanks to its portrayal in movies and on stage. However, behind the dramatic depictions lies a scientifically grounded technique that has been used for decades to help people overcome challenges, manage stress, and achieve personal growth. In this article, we’ll explore the science behind hypnosis, demystifying how it works and why it can be such a powerful tool for change.



What Happens in the Brain During Hypnosis?


When you enter a state of hypnosis, whether guided by a therapist or through self-hypnosis, your brain undergoes measurable changes. During hypnosis, the brain shifts from the usual beta waves associated with normal waking consciousness to a combination of alpha and theta waves. These slower brain waves are typically associated with relaxation, meditation, and deep focus.

  • Alpha Waves: These brain waves occur when you are in a state of relaxed awareness, such as when you’re daydreaming or lightly meditating. In hypnosis, alpha waves increase, allowing you to focus internally while remaining aware of your surroundings.

  • Theta Waves: Theta waves are even slower and are often linked to the early stages of sleep, deep meditation, and the subconscious mind. In hypnosis, the increase in theta activity facilitates access to the subconscious, where deeply ingrained habits, beliefs, and emotions reside.


This shift in brain activity is what makes hypnosis such an effective tool for accessing and influencing the subconscious mind. In this state, your mind becomes more open to suggestions, allowing you to reprogram limiting beliefs, reduce stress, and create positive changes in your life.


How Hypnosis Affects the Subconscious Mind


The subconscious mind is incredibly powerful. It controls many of our automatic responses, habits, and deeply held beliefs. However, because it operates below the level of conscious awareness, it can be challenging to change these patterns through willpower alone. This is where hypnosis comes in.


During hypnosis, the critical mind—the part of your consciousness that judges and filters information—relaxes. This allows positive suggestions to bypass the critical mind and reach the subconscious directly. For example, if you’re working on building confidence, a suggestion like “I am confident and capable” can be more easily accepted by the subconscious mind when you’re in a hypnotic state.

Over time, repeated suggestions during hypnosis can lead to lasting changes in thoughts, behaviours, and feelings. This process is similar to how habits are formed through repetition, but hypnosis accelerates this process by working directly with the subconscious.


Hypnosis in Practice: Applications and Benefits


Hypnosis is more than just a tool for relaxation; it’s a scientifically supported method that can be applied to various areas of life:

  • Stress Reduction: Hypnosis can help you manage stress by promoting relaxation and reducing the impact of stressors. It’s been shown to lower blood pressure, reduce anxiety, and even improve sleep quality.

  • Behavioural Change: Whether you want to quit smoking, lose weight, or overcome a phobia, hypnosis can help reprogram the subconscious mind to support these changes. It’s often used as part of a comprehensive treatment plan for these issues.

  • Pain Management: Hypnosis has been used in medical settings to help manage pain, including chronic pain and discomfort during medical procedures. It works by altering the perception of pain in the brain.

  • Personal Development: From boosting confidence to enhancing focus and motivation, hypnosis can be used to improve various aspects of personal and professional life.


Debunking Myths: What Hypnosis Is Not


Despite its benefits, hypnosis is often misunderstood. Here are a few myths to clear up:

  • Myth 1: Hypnosis is mind control: Hypnosis cannot make you do anything against your will. You remain fully in control during a hypnotic state and can choose to accept or reject any suggestions.

  • Myth 2: You can get “stuck” in hypnosis: Hypnosis is a natural state, similar to daydreaming. You can emerge from it at any time, simply by deciding to do so.

  • Myth 3: Only certain people can be hypnotised: While some individuals may be more naturally susceptible to hypnosis, most people can benefit from it with the right guidance and practice.


Discover the Power of Hypnosis for Yourself


If you’re curious about how hypnosis can help you achieve your goals, I invite you to explore my book, "Empower Your Subconscious: The Power of Self-Hypnosis." This comprehensive guide delves deeper into the science of hypnosis and provides practical techniques for using self-hypnosis to improve your life.

In the book, you’ll learn how to:

  • Enter a hypnotic state and access your subconscious mind.

  • Create powerful, positive suggestions that align with your goals.

  • Apply self-hypnosis to specific areas of your life, such as stress management, confidence-building, and personal growth.



Understanding the science behind hypnosis can empower you to use this powerful tool effectively. Whether you’re looking to make small changes or achieve significant transformations, self-hypnosis offers a proven method to help you get there.


Karen Ferguson is a highly experienced hypnotherapist, counsellor, supervisor, and coach with nearly 25 years of practice. Having trained over 1,000 adult students to become hypnotherapists, Karen brings a wealth of knowledge and expertise to her work, blending a deep understanding of the subconscious mind with practical, evidence-based techniques. In addition to her hypnotherapy practice, Karen holds qualifications in counselling, Cognitive Behavioural Therapy (CBT), coaching, positive psychology, and relationship psychology. She continues to work with clients and supervise other therapists, while also enjoying a dynamic, travel-rich lifestyle, working primarily online and from her base in Cambridgeshire, UK. Through her writing, Karen aims to empower individuals to harness the power of their minds for personal growth and transformation.




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