In my diploma thesis I will explore the body language of actors in detail and describe my own practical experience. Most of my experiences come from performance training, which I have gained whilst attending The Theatre Faculty of the Academy of Performing Arts in Prague (DAMU). In the first part I describe physical movement in the early days of theater. Then I focus on analysing the concepts of nonverbal communication and its usage on the stage. I explore various different performance spaces and analyze their influence on the subsequent differences in physical acting-expressionism. The aim of my thesis is to explain how we can use our bodies during the process of preparing for performance and what can affect it. The benefit of this approach is the subsequent self-reflection, which forced me to deeply develop the basic techniques of physical communication. To be specific, the physical movements which lead to the transmission of emotion, feelings and information to the viewer.