4x4 Norwegian HIIT Workout Plan (Free Digital Download)

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Welcome to a 7-week journey towards improved fitness and better health. Created by the Cardiac Exercise Research Group at the esteemed Norwegian University of Science and Technology, this fitness program is a research-based and time-efficient way to boost your health, and it fits both those who hate and those who love exercise.

CERG's 7 week program is time efficient, and gives a robust training effect for body and soul. The endurance activities are described as walking or running, but feel free to swim, cycle, row or perform any other activity that involves dynamic work with large muscle groups.