Physical therapists diagnose and treat movement dysfunctions and injuries. They develop treatment plans using exercises, hands-on therapy, and equipment. Physical therapy has evolved significantly since ancient Greece. The field is growing rapidly due to an aging population and increased healthcare needs. Physical therapists work in various settings and have a median salary of $79,860. Becoming a physical therapist requires a doctorate degree from an accredited program, which typically takes 3 years and includes clinical experience.