It is the vagus nerve that facilitates the mammalian diving response and supplies motor neurons to the pharynx. How can its electrical stimulation benefit freediving training? 

• slowed heart rate and increased heart rate variability
• muscle relaxation and improved flexibility 
• increased lung capacity 
• accelerated recovery 
• enhanced focus, cognition and overall self-regulation 
• improved control of the soft palate, root of the tongue and epiglottis (muscles involved in equalisation) 

During a 90-minute online class, we will discuss the vagus nerve's role in the mammalian diving response, equalisation and recovery. You will learn about the procedure and how to buy your own equipment which is not a trivial task.  

The method has some side effects and contraindications; they were discussed during the class, too. 

• The anatomy of the vagus nerve and its role in the mammalian diving response and the soft palate innervation 
• Proven effects of tVNS that can benefit freedivers’ training 
• The potential of tVNS in improving performance, recovery and equalisation 
• Transcutaneous electrical stimulation of the vagus nerve:

  - effects and indications

  - side effects and contraindications
  - procedure and equipment  

• My experience and that of those I introduced to tVNS 
• Other applications of tVNS 
• Q&A   

• Duration: just under a 90-minute class 
• Price: €25 - as much as live attendance was  
• This is a recording of the world's first online class that took place on March 30, 2025