My name is Colin O'Leary and I am Master's student in the Exercise and Sport Science department at the University of North Carolina at Chapel Hill. Together, with my academic advisor, Dr. Anthony Hackney, I am launching a study that is examining the effects of exercise training on sexual libido in adult males. To assess whether a full research study is needed to answer this question, I am doing a preliminary questionnaire that will ask questions about training history and sexual libido that has been approved by the UNC institutional review board (IRB). Follow the below link to take an online survey about the effects of physical exercise and training load on sexual libido in adult males. The survey should only take 5-10 minutes to complete. Please only do so if you are a male between the ages of 18-80 that regularly participates in endurance activities, such as running, walking, biking, or swimming. Thank you!