This safety lesson focuses on full-body stretches targeting the legs to improve flexibility, reduce muscle strain, and prevent workplace injuries. It covers proper stretching techniques for hamstrings, quadriceps, calves, and hip flexors. The video emphasizes the importance of warming up, maintaining correct posture, and incorporating stretching into daily routines. By following these practices, employees can enhance mobility, prevent muscle tightness, and reduce the risk of strains or sprains.