Brits that work in IT have topped a poll of the most unhealthy employees, says Fat Free Fitness.

According to the personal training website, just 19 percent of IT workers met the government's activity guidelines, which recommend half an hour of moderate exercise, five times a week. IT workers are closely followed by receptionists and sales people as the most unhealthy.

Only 14 percent of IT workers eat five portions of fruit and vegetables a day, while 50 percent drink energy drinks every day.

On average IT workers consume 10 cups of coffee a day, which is more than your recommended daily allowance of caffine.

"There is clearly a correlation between sitting at a desk or wheel all day and how active you're likely to be," said Rich Leigh, founder of Fat Free Fitness.

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