Articles · Norwegian 4x4 Guide
Summer is just around the corner, and there’s no better time to get in shape. This article presents the top 10 HIIT workouts that are perfect for getting fit fast. These workouts, ranging from full-body routines to targeted exercises, will help you look and feel your best in no time.
But don’t forget to stay hydrated, ok? Read the tips for vacation, sport, and outdoor activities from our friends at TakeSip (the hydration companion).
These HIIT workouts are designed to get you fit fast and ready for summer. Start your fitness journey with the Norwegian 4×4 Protocol app. Download now and explore related articles like “Building Muscle with Interval Training” to complement your summer fitness plan.
Summer workout ideas
Get started with 4x4
Sustainable fitness strategies
Ready to train smarter? Download the Norwegian 4x4 Protocol App for guided 4-minute intervals, heart-rate zones, and progress tracking. Get the app, see how it works, or start with our beginner's guide.
Last Updated: June 9, 2026
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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.
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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