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What Happens to Our Brains When We Relax?

As busy individuals, stress and anxiety can often feel like a constant presence in our lives. Whether it's due to work, relationships, or just the daily grind, it's important to find ways to relax and destress. But have you ever wondered what happens to your brain when you do take a moment to relax? In this blog, we'll explore the science behind relaxation and its effects on our brains.

The Science of Relaxation

To understand how relaxation affects our brains, we first need to understand the nervous system. The nervous system is composed of two branches: the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system is responsible for our "fight or flight" response, which is triggered in response to stress or danger. On the other hand, the parasympathetic nervous system is responsible for our "rest and digest" response, promoting relaxation and recovery.

When we're under stress, our sympathetic nervous system kicks into gear, releasing hormones like cortisol and adrenaline. This can lead to physical symptoms like increased heart rate, shallow breathing, and muscle tension. However, when we take time to relax, our parasympathetic nervous system takes over, allowing us to recover from the effects of stress.

One important neurotransmitter that plays a role in relaxation is GABA (gamma-aminobutyric acid). GABA is an inhibitory neurotransmitter that helps to calm the brain and reduce anxiety. When GABA levels are low, we may experience increased anxiety and difficulty relaxing.

Physical Changes in the Brain During Relaxation

So what exactly happens in our brains when we relax? One study found that relaxation can lead to changes in brain waves. Specifically, during relaxation, we may experience an increase in alpha waves (associated with a relaxed but awake state), theta waves (associated with deep relaxation), and delta waves (associated with deep sleep).

Relaxation can also lead to a reduction in cortisol levels, which can help to reduce stress and anxiety. Cortisol is a hormone that's released in response to stress, and high levels of cortisol have been linked to a number of negative health outcomes, including depression, anxiety, and obesity.

Another interesting effect of relaxation is an increase in blood flow to the prefrontal cortex. The prefrontal cortex is responsible for executive functions like decision-making, planning, and impulse control. When we're stressed, blood flow to this area may be reduced, leading to impaired cognitive function. However, during relaxation, blood flow to the prefrontal cortex may increase, allowing us to think more clearly and make better decisions.

Emotional Changes in the Brain During Relaxation

Relaxation not only has physical effects on the brain but emotional ones as well. One area of the brain that's particularly involved in stress and anxiety is the amygdala. The amygdala is responsible for processing emotions like fear and anxiety, and it's thought to play a key role in the fight or flight response.

Studies have shown that relaxation techniques like meditation can lead to changes in the amygdala. Specifically, regular meditation practice has been linked to a reduction in amygdala activity, which may help to reduce anxiety and improve emotional regulation.

Another important effect of relaxation is an increase in feel-good neurotransmitters like serotonin and dopamine. Serotonin is a neurotransmitter that regulates

mood, while dopamine is involved in reward and motivation. When we're stressed or anxious, levels of these neurotransmitters may be lower than normal. However, when we take time to relax, our bodies may produce more of these feel-good chemicals, helping us to feel happier and more motivated.

Techniques for Relaxation

Now that we've explored the science behind relaxation, let's take a look at some specific techniques that you can try out.

  1. Breathing exercises: One simple technique for relaxation is to focus on your breath. Try taking slow, deep breaths and exhaling slowly. You can also try counting your breaths or visualizing the air moving in and out of your body.

  2. Progressive muscle relaxation: This technique involves tensing and relaxing different muscle groups in your body, starting from your toes and working your way up to your head. By focusing on each muscle group, you can release tension and promote relaxation.

  3. Visualization and guided imagery: This technique involves using your imagination to create a calming scene in your mind. You might imagine yourself on a beach, in a peaceful forest, or anywhere else that makes you feel relaxed.

  4. Mindfulness meditation: This technique involves focusing on the present moment and observing your thoughts and feelings without judgment. By practising mindfulness, you can learn to become more aware of your body and mind, which can help you to manage stress and anxiety.


In conclusion, relaxation is an important tool for managing stress and anxiety, and it has a number of positive effects on the brain. By understanding the science behind relaxation, we can learn to appreciate its benefits and incorporate it into our daily lives. Whether it's through breathing exercises, progressive muscle relaxation, visualization, or meditation, there are many different techniques that you can try out to promote relaxation and destress. Remember, relaxation is a skill that can be learned and practised over time, so don't be discouraged if it doesn't come easily at first. With patience and persistence, you can learn to relax and enjoy the many benefits it has to offer.

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