Seventeen Days is a theory-based series of interactive videos designed to educate young women about contraception and sexually transmitted infections (STIs). The program presents scenarios involving decisions that young women face in romantic relationships. These stories identify choice points, suggest risk-reduction strategies, and ask viewers to think about what they would do in a similar situation. The video is interactive, allowing viewers to choose what they want to watch. Viewers are given the opportunity to mentally practice how they would respond in hypothetical situations through the frequent use of “cognitive rehearsal.”