Dedicate regular time, even short intervals, specifically for inquiry and reflection.
—
Dr. Diane Hamilton,
Forbes.com,
15 Sep. 2025
The Norwegian 4×4 protocol, developed by researchers at the Norwegian University of Science and Technology (NTNU), involves four rounds of four-minute high-intensity intervals followed by three-minute recovery periods.
Examples are automatically compiled from online sources to
show current usage.Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Share