Exercise advice and exercise programs from CERG

Watch our video and learn how to perform 4x4 intervals in the best possible way. Then try our popular 7-week exercise program. On this page we have gathered some general exercise advice, in addition to our own simple and very time-efficient exercise programs.

4x4 Interval Training

High-intensity physical exercise will boost your health

– Øivind Rognmo at TEDxTrondheim

Frequently Asked Questions

How tiring should interval training really be?

Should you push yourself to 100% during the last interval?

Can people with atrial fibrillation do interval training? 

Answers to questions we often receive

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