Book excerpt: Inside The Performance Workshop: A Sourcebook for Rasaboxes and Other Exercises is the first full-length volume dedicated to the history, theory, practice, and application of a suite of performer training exercises developed by Richard Schechner and elaborated on by the editors and contributors of this book. This work began in the 1960s with The Performance Group and has continued to evolve. Rasaboxes—a featured set of exercises—is an interdisciplinary approach for training emotional expressivity through the use of breath, body, voice, movement, and sensation. It brings together: the concept of rasa from classical Indian performance theory and practice research on emotion from neuroscience and psychology experimental and experiential performance practices theories of ritual, play, and performance This book combines both practical “how-to” guidance and applications from diverse contexts including undergraduate and graduate actor training, television acting, K-12 education, devising, and drama therapy. The book serves as an introduction to the work as well as an essential resource for experienced practitioners.