The human body has a natural level of mobility and flexibility to make sure that all structures and functions are working properly. The bones, muscles, ligaments, tendons, and any other tissues work together to allow range of movement, agility, and speed. Maintaining proper fitness and balanced nutrition can help keep the human body working accordingly. Underlying conditions and injuries, including low back pain and sciatica, can tremendously affect an athlete’s mobility and flexibility. Mobility refers to the ability to perform functional movements with no restrictions in range of motion (ROM). Flexibility can involve strength, balance, or coordination. A person with great flexibility may not be able to perform the same functional movements as a person with great mobility. However, flexibility is a fundamental component of mobility while extreme flexibility is not necessary to perform functional movements. According to Dr. Alex Jimenez’s collection of articles on mobility and flexibility, athletes or individuals who don’t stretch or exercise can experience shortened or stiffened muscles which decreases their mobility and flexibility, often causing low back pain and sciatica.