The Norwegian 4x4 workout that promises to improve fitness in little time

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

The Norwegian 4x4 HIIT workout is a favourite among athletes and actress Jessica Biel – here’s why it’s so beneficial

But a type of interval workout recently popularised by actress Jessica Biel could be the solution – with research showing it ...
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Short on time? This 30-minute standing HIIT class will boost your metabolism and build strength

While the past few years have seen the rise (and rise) of low-intensity workouts, like Pilates and yoga, grow in popularity, there’s still a very valid case for adding in some high-intensity interval ...

The Best HIIT Workout to Kickstart Your New Year

Everything you need to know about high-intensity interval training to help you hit the ground running in 2026—including a low-impact HIIT workout alternative.
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Forget running — this 28-minute dumbbell HIIT workout burns calories and builds muscle

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images If you hate running, the good news is it’s not the only way to burn calories ...

The best HIIT workout to kickstart your new year, new you mantra

Everything you need to know about high intensity interval training to help you hit the ground running in 2026 – including a low impact alternative ...