Revolutionize Your Fitness with Norwegian 4x4 Protocol

The Norwegian 4x4 Protocol is a cutting-edge approach to exercise that can significantly boost your cardiovascular health and stamina. It consists of four intense four-minute intervals at 90-95% of your maximum heart rate, each followed by a three-minute recovery period. This scientifically backed method is renowned for its efficiency in improving VO2 max and overall endurance.

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Norwegian 4x4 Protocol Fitness App for iOS
Revolutionize your workout routine with the simple and effective Norwegian 4x4 training method.
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Norwegian 4x4 Protocol Fitness App for Android
Revolutionize your workout routine with the simple and effective Norwegian 4x4 training method.
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Revolutionize Your Fitness with Norwegian 4x4 Protocol

No credit card required :-)
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Norwegian 4x4 Protocol App
Revolutionize Your Fitness with Norwegian 4x4 Protocol