To help prepare you for your PM&R Board Exams, we're bringing you a podcast series dedicated to current practices and core knowledge. Main Learning objectives: • Review types of muscle fibers and types of muscle contraction • Define aerobic exercise and physical activity guidelines from the US department of health and human services • Describe the various benefits of cardiovascular exercise, particularly with aging • Understand the physiologic effects of bedrest and immobility Credits: Episode was written and hosted by: Christian Belisario, MD, MS; Katherine Caldwell, MD This episode was reviewed for accuracy by: Franklin Caldera, DO, MBA; Jason Pan, MD This podcast series is directed by: Benjamin Gill, DO, MBA; Rosie Conic, MD, PhD; Sre Gorukanti, MD Please send feedback to aapdigitaloutreach@gmail.com so we can best suit your learning needs! Content for this series is based off of current PM&R learning materials and is created by residents for residents. It is not an official board review study guide.