Office Workers advised to move for an hour a day

At least an hour a day of physical activity may be required to offset the harmful effects of sitting at a desk for eight hours a day. 

The report published in the Lancet analysed the findings from 16 different studies of more than a million people for up to 18 years from Western Europe, America and Australia.

The report concluded that just 1 hour of "moderate intensity" exercise such as walking or cycling for pleasure was enough to offset the ill effects of sitting for long periods  

Those who sat and were sedentary for less than 4 hours a day but moved for less than 5 minutes were 27% more likely to die prematurely, rising to 59% for those who were inactive but spent 8 hours or more sitting. 

In conclusion, office workers have to do twice as much exercise as the official guidelines (WHO) recommend to reduce the risk of premature death.