The Wim Hof breathing training helps with lack of energy and shortness of breath. It strengthens the immune system and helps to deal more efficiently with the inhaled oxygen.
In addition, the alternation between activation and relaxation stimulates the entire nervous system - especially and sustainably the parasympathetic nervous system, that part of the vegetative nervous system that is responsible for rest and digestion. This in turn has a positive impact on our emotional state while supporting our immune system in maintaining or regaining a healthy balance.
As the name suggests, breathing training according to Wim Hof is training and therefore only shows an effect if it is used regularly.