Here in the UK each year 18 million sick days are releated to obesity and despite all of knowing that excercise is good for us two thirds of Brits are fat ot obese.

An estimated 24 million people in the UK are obese or over weight and this increases the risk of heart disease, cancer and diabetes. The Uk has more cases of obesity than any of its European counterparts.

Avery Dennison Office Products, the world's leading manufacturer of office supplies, has brought in Donna Dawson, a psychologist, to study how a coupleof hours on a sports field or on a tennis court could have a positive effect in the workplace.

Donna Dawson said: "When you play sport, you improve your mental as well as your physical prowess. "every sport demands effort, concentration, discipline and perseverance. These are the basic qualities needed in daily working life."

Here is her guide to decide which sport to choose:

For those who face long, intensive projects such as fundraising then jogging, cross-country, swimming or aerobics is best for you as these sports are about setting your self interim goals as well as testing testing physical and mental stamina.

Those in a very competitive career such as sales then football and rugby is just up your street. These sports boost leadership qualities as well as encouraging team work and team spirit.

For people in marketing and PR, roles which require strategic planning then Yoga or Tai Chi is recommended as its measured actions and steady breathing encourage a clearer level of thought.

Those in the creative industry such as advertising then fast sport such as squash, tennis and badminton are great for encouraging the rapid succession of ideas as well as developing a keen eye to watch your opponent.

And finally those working in a highly political organisation judo is the activity for you as it allows you to think several steps ahead and consider the consequences and reactions to your moves.