05/09/2013 11:43 BST | Updated 28/03/2014 05:59 GMT

Exercise: How To Lower Your BMI In Half The Amount Of Time (VIDEO)

The next time you hear someone gym-boasting about how long they worked out for, don't waste your time feeling guilty.

A new report shows that it's much better and more effective to have short, intense bursts of fitness rather than long sessions. You'll lower your BMI a lot quicker too...

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