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

Lack of time is often the main reason people don’t exercise regularly. But a type of interval workout recently popularised by actress Jessica Biel could be the solution – with research showing it can ...
The Conversation

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

The intensity of the 4x4 workout can improve your cardiovascular health. TORWAISTUDIO/ Shutterstock Lack of time is often the main reason people don’t exercise regularly. But a type of interval ...