The information presented in this article is intended to make the reader aware of the most current research on the topic of flexibility and to make some practical suggestions for planning effective programs for developing flexibility in athletes. Though additional research needs to be done, we have enough knowledge to plan sound programs for reducing the incidence of injury and for promoting optimal performance among athletes in all sports. References for exercise selection and testing, as well as for documentation of the materials presented in this article are provided on the following pages.