Video for 4x4 interval training, 7-week fitness program and frequently asked questions| www.ntnu.edu
High-intensity interval training is a great way to maximize your workout time. Learn why and how, as well as the benefits of HIIT running.| RunToTheFinish
Learn the real benefits of HIIT workouts from Dr. Martin Gibala. Find out how shorter, intense workouts can still provide significant improvements in fitness and mitochondrial capacity.| The Art of Manliness