Acting is the comprehensive art of telling a story by embodying a character across various mediums like theatre, film, and television, demanding a wide range of skills from emotional intelligence and imagination to vocal projection and physical expressivity. The very concept of an individual actor emerged in Ancient Greece with Thespis of Icaria around 335 BCE, who innovatively stepped out of the chorus to speak as a distinct character, giving rise to the term "thespian." Most professional actors undertake extensive training, often spending years in conservatories where the Stanislavski system—and its American adaptation, method acting, popularized by figures like Lee Strasberg—is a cornerstone. Beyond artistic mastery, this rigorous training, involving frequent performance and public speaking, is shown to cultivate a calmer physiology, significantly reducing stress and anxiety.