Bum kicks

This video is an exercise instruction video from Peak, a fitness app that provides exercise instruction and professional workouts compiled by pro athlete and British 1500m runner, Ian Williamson. Based in Cambridge, England - we are a start-up with experience in athletics, personal training, software design and development. Our goal is to create the best fitness app that provides professional training advice for people of all levels without any gimmicks or cheesy gym heroes. All of the videos in our cha