Introductory works first explain the meaning of yoga and its place in the everyday life of a normal citizen, how it helps to solve life's problems. He pays considerable attention to the method of concentration, warns against its incorrect understanding, and in the work co-authored by Assoc. MD Antonín Bajer, provides evidence of brain activity during various types of yogic concentration. Several works also deal with various philosophical and spiritual trends that are relevant again today, such as Buddhism and Zen Buddhism.