What is HIIT?

Discover how the Norwegian 4x4 HIIT Protocol can transform your fitness journey

What is High-Intensity Interval Training (HIIT)?

High-Intensity Interval Training (HIIT) is a training technique in which you give all-out, one hundred percent effort through quick, intense bursts of exercise, followed by short, sometimes active, recovery periods. This type of training gets and keeps your heart rate up and burns more fat in less time.

Who Said HIIT?

Fitness experts and athletes around the world have been praising HIIT for its efficiency and effectiveness in improving cardiovascular health, boosting endurance, and aiding weight loss. It's a staple in the routines of those who seek maximum results in minimal time.

Introduction to the Norwegian 4x4 Protocol

The Norwegian 4x4 Protocol is a scientifically-backed high-intensity interval training regimen designed to maximize cardiovascular health and endurance. It consists of four cycles of 4-minute high-intensity intervals, each performed at 90-95% of your maximum heart rate, followed by 3 minutes of active recovery. This method is highly effective in enhancing VO2 max, a key factor in aerobic performance and endurance.

Discover the Norwegian 4x4 HIIT Protocol

Download the app

Get the app now, download it for iOS or Android device of your choice.

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Learn How the Norwegian 4x4 App Works

Learn how to make the most out of your workouts with our comprehensive guide. Find out how the app can help you achieve your fitness goals with ease.

Calculate Your Target Heart Rate (HRmax)

Estimate your maximum heart rate based on age, weight and height. Knowing your HRmax is essential for effective training and cardiovascular health.

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