A new study by Birmingham City University reveals that 62% of people have lost weight after starting an affair. Other findings:

- unfaithful men lose an average of 6 pounds

- unfaithful women lose an average of 10 pounds

Researcher Craig Jackson says, ''Engaging in an affair puts an enormous amount of pressure on an individual. Telling lies, avoiding direct confrontations and sneaking around someone's back cause a lot of stress. Being stressed has a whole range of effects on your body. You produce adrenaline and the stress hormone cortisol, your heart rate goes up, your breathe faster, your blood pressure rises and levels of serotonin are increased. All this can burn calories. There are also the behavioral changes that take place when you have an affair. When you're up to no good,you're more likely to be rushing from A to B, with less time to eat your lunch or have that extra pint. These things can also effect weight loss. Furthermore, there is a physical pressure. Many men will want to be the alpha male, and looking good for their new lover is important.''