[custom_adv] Acting is an activity in which a story is told by means of its enactment by an actor or actress who adopts a character—in theater, television, film, radio, or any other medium that makes use of the mimetic mode. [custom_adv] Acting involves a broad range of skills, including a well-developed imagination, emotional facility, physical expressivity, vocal projection, clarity of speech, and the ability to interpret drama. [custom_adv] Acting also demands an ability to employ dialects, accents, improvisation, observation and emulation, mime, and stage combat. [custom_adv] Many actors train at length in specialist programmes or colleges to develop these skills. The vast majority of professional actors have undergone extensive training. [custom_adv] Actors and actresses will often have many instructors and teachers for a full range of training involving singing, scene-work, audition techniques, and acting for camera. [custom_adv] One of the first actors is believed to have been an ancient Greek called Thespis of Icaria. Writing two centuries after the event, Aristotle in his Poetics (c. 335 BCE) suggests that Thespis stepped out of the dithyrambic chorus and addressed it as a separate character. [custom_adv] Before Thespis, the chorus narrated (for example, "Dionysus did this, Dionysus said that"). When Thespis stepped out from the chorus, he spoke as if he was the character (for example, "I am Dionysus. I did this"). [custom_adv] To distinguish between these different modes of storytelling—enactment and narration—Aristotle uses the terms "mimesis" (via enactment) and "diegesis" (via narration). From Thespis' name derives the word "thespian". [custom_adv] Actor and Amateur theatre: A professional actor is someone who is paid to act. Professional actors sometimes undertake unpaid work for a variety of reasons, including educational purposes or for charity events. [custom_adv] Not all people working as actors in film, television, or theatre are professionally trained. Bob Hoskins, for example, had no formal training before becoming an actor. [custom_adv] Members of the First Studio, with whom Stanislavski began to develop his 'system' of actor training, which forms the basis for most professional training in the West. [custom_adv] Conservatories and drama schools typically offer two- to four-year training on all aspects of acting. Universities mostly offer three- to four-year programs, in which a student is often able to choose to focus on acting, whilst continuing to learn about other aspects of theatre. [custom_adv] Schools vary in their approach, but in North America the most popular method taught derives from the 'system' of Konstantin Stanislavski, which was developed and popularised in America as method acting by Lee Strasberg, Stella Adler, Sanford Meisner, and others. [custom_adv] Other approaches may include a more physically based orientation, such as that promoted by theatre practitioners as diverse as Anne Bogart, Jacques Lecoq, Jerzy Grotowski, or Vsevolod Meyerhold. [custom_adv] Classes may also include psychotechnique, mask work, physical theatre, improvisation, and acting for camera. Regardless of a school's approach, students should expect intensive training in textual interpretation, voice, and movement. [custom_adv] Applications to drama programmes and conservatories usually involve extensive auditions. Anybody over the age of 18 can usually apply. Training may also start at a very young age. Acting classes and professional schools targeted at under-18s are widespread. [custom_adv] These classes introduce young actors to different aspects of acting and theatre, including scene study.Increased training and exposure to public speaking allows humans to maintain calmer and more relaxed physiologically. [custom_adv] By measuring a public speaker’s heart rate maybe one of the easiest ways to judge shifts in stress as the heart rate increases with anxiety . As actors increase performances, heart rate and other evidence of stress can decrease. [custom_adv] This is very important in training for actors, as adaptive strategies gained from increased exposure to public speaking can regulate implicit and explicit anxiety. By attending an institution with a specialization in acting, increased opportunity to act will lead to more relaxed physiology and decrease in stress and its effects on the body. [custom_adv] Rehearsal is a process in which actors prepare and practice a performance, exploring the vicissitudes of conflict between characters, testing specific actions in the scene, and finding means to convey a particular sense. [custom_adv] Some actors continue to rehearse a scene throughout the run of a show in order to keep the scene fresh in their minds and exciting for the audience.A critical audience with evaluative spectators is known to induce stress on actors during performance(see Bode & Brutten) and an actor will typically rate the quality of their performance higher than their spectators. [custom_adv] Heart rates are generally always higher during a performance with an audience when compared to rehearsal, however what's interesting is that this audience also seems to induce a higher quality of performance. [custom_adv] Depending on what an actor is doing, his or her heart rate will vary. This is the body's way of responding to stress. Prior to a show you will see an increase in heart rate due to anxiety. [custom_adv] While performing an actor has an increased sense of exposure which will increase performance anxiety and the associated physiological arousal, such as heart rate. Heart rates increases more during shows compared to rehearsals because of the increased pressure, which is due to the fact that a performance has a potentially greater impact on an actors career. [custom_adv] After the show you will see a decrease in the heart rate due to the conclusion of the stress inducing activity. Often the heart rate will return to normal after the show or performance is done; however, during the applause after the performance there is a rapid spike in heart rate. [custom_adv] There is a correlation between heart-rate and stress when actors' are performing in front of an audience. Actors claim that having an audience has no change in their stress level, but as soon as they come on stage their heart-rate rises quickly. [custom_adv] A 2017 study done in an American University looking at actors' stress by measuring heart-rate showed individual heart-rates rose right before the performance began for those actors opening. [custom_adv] There are many factors that can add to an actors' stress. For example, length of monologues, experience level, and actions done on stage including moving the set. Throughout the performance heart-rate rises the most before an actor is speaking. [custom_adv] The stress and thus heart-rate of the actor then drops significantly at the end of a monologue, big action scene, or performance.