How to improve your swimrun in only 5 weeks time

Train less and smart and still improve your swimrun performance! High-intensity intermittent training (HIIT) is an interval training exercise where you perform short periods of high-intensity training, which is followed by a much shorter and significantly low-intensity period. You basically repeat this until you are too tired to continue. Normally, this way of training will take no more than 30 minutes, excluding warm-up and cool-off, which is excellent if you …