Research suggests that cold water immersion can effectively stimulate the vagus nerve.​​​​​​​​​ With regular stimulation of the vagus nerve, long-term improvements in mood, wellbeing and resilience increase.


What is the Vagus Nerve?

The vagus nerve is a long nerve that runs from the brain to the gut. It is part of the parasympathetic nervous system, which is responsible for calming the body down. It is also involved in many bodily functions, including heart rate, breathing, digestion, and mood.

A healthy vagus nerve is associated with good health and well-being. However, a low vagal tone, which is when the vagus nerve is not functioning properly, can be a sign of stress.

Stress can lead to a variety of health problems, including anxiety, depression, gut problems, and inflammation. Stimulating the vagus nerve can help to increase vagal tone and improve overall health.


Direct Stimulation: 

Direct stimulation of the vagus nerve is a medical procedure that involves implanting a small device that sends electrical pulses to the nerve. This can be used to treat a variety of conditions, including epilepsy, depression, and anxiety.


Indirect Stimulation:

Direct stimulation of the vagus nerve is not always necessary. In some cases, indirect stimulation of the nerve can be effective. This can be done by stimulating certain areas of the body that are connected to the vagus nerve.

For example, taking a cold shower or ice bath can stimulate the vagus nerve. This is because the body reroutes this stimulation back to the vagus nerve.


Cold Exposure & the Vagus Nerve:

Research suggests that cold water immersion can effectively stimulate the vagus nerve.

When the body is exposed to cold water, it triggers the release of stress hormones, such as adrenaline and cortisol. These hormones then trigger the vagus nerve to send signals to the brain that help to reduce stress and promote relaxation.

When the vagus nerve is stimulated, it sends signals to the heart to slow down, the lungs to breathe more deeply, and the digestive system to relax. It also helps to reduce inflammation and boost the immune system.