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This 40-minute treadmill workout cut my 5km running time by 8 minutes - here's how to do it

This workout consists of four-minute bursts of exercise, done at 85 to 95% of your maximum heart rate. Afterwards, you get ...

CEOs and fitness: Did you know Mark Zuckerberg crushed the 'Murph' challenge in under 40 minutes?

Yet Mark Zuckerberg crossed that line. The Meta CEO revealed that he completed the famous “Murph” challenge in under 40 ...