Norwegian 4x4 Protocol

About

The Norwegian 4x4 Protocol is a revolutionary high-intensity interval training (HIIT) method designed to optimize cardiovascular health and enhance endurance. This structured workout consists of four intense four-minute intervals at 90-95% of your maximum heart rate, each followed by a three-minute active recovery. Backed by scientific research, this protocol is proven to significantly boost your VO2 max, an essential indicator of aerobic capacity, making it a favorite among athletes and fitness enthusiasts alike. With the Norwegian 4x4 app, you can master this efficient workout method on iOS and Android. The app provides guided intervals, heart rate tracking, and progress monitoring, ensuring you stay on track to achieve optimal results in just 35 minutes. Whether you're just starting out or are a seasoned athlete, the Norwegian 4x4 Protocol adapts to your fitness level, making it suitable for everyone. Experience the benefits of improved heart health and endurance with this evidence-based training approach, validated by experts in the field.