Background: The gastrocnemius muscle is essential for walking and maintaining a straight posture. The gastrocnemius is a large muscle that covers the bulk of the lower thigh's posterior region. Symptoms of low back pain may be described in several ways, depending on the underlying condition. An official definition of a low back injury is "pain and discomfort below the lumbar spine's costal margin and above the gluteal folds, with or without leg pain." The study's primary goal is to determine if stretching exercises for low back pain affect the gastrocnemius muscles.