The goal of this clinical trial is to learn if yoga-based breathing styles could improve memory performance in adult persons without relevant prior experience in yoga, meditation or similar disciplines and without existing health problems which could hinder the implementation of the breathing exercises. The main questions it aims to answer are: * Can the memory performance get better ? * Can the subjective stress level be reduced ? Participants will complete a memory test while doing a specific nasal and oral breathing. They will complete a two-week training period after the test with daily nasal or mouth breathing training or no training at all, depending on the group, the are divided into. Researchers will compare the effect of different breathing styles on memory ability among themselves.