Share 'Parkour and Earphones'

Hello fellow traceurs !I'm currently studying Industrial Design and I´m doing my final project about Parkour and the use of earphones/headphones. I would appriciate if you would take a look at a survey which aims to get a broader analysis of people who do parkour and similar activities. Link:http://www.eSurveysPro.com/Survey.aspx? ... 67171246a3Thanks in advance to all who choose to participate !