@Mangan150: One-minute high-intensity exer...@Mangan150 5 views Sep 30, 2024 1 One-minute high-intensity exercise (3 x 20 sec), 3x a week for 12 weeks, improved fitness as much as did 3 x 45 minutes a week aerobic training.Muscle mitochondria also increased similarly in both. Intensity trumps volume.You don't need a lot of time to get fit. Save this thread — create a free accountSave this thread Sign Up