Italian medical researchers carried out a series of studies as part of the conference, and found that a healthy sex life means fewer cardiovascular problems for men.
The investigation was carried out by the Italian Society of Sexual Medicine who are holding their annual congress in the city of Modena.
Dr Emmanuele Jannini, coordinator of the research, said: "What was evident from the research was that men who had active sex lives and were faithful to their partners had fewer cardiovascular complaints and lived longer.
"Increased sexual activity produces more testosterone, which leads to less depression and a better cardiovascular performance which means an improved metabolism."
Dr Jannini said the research has been carried out by the University of Florence on 4,000 men and the study revealed that those who were unfaithful had a poor cardiovascular performance because they were "also coping with the increased stress of their infidelity."
She added that the study had shown a poor quality sex life could also lead to depression.
Dr Jannini added that an increased amount of testosterone produced during sex was good for men because it burned off excess sugars and reduced the risk of heart disease.
She added: "People who have diabetes especially benefit from a healthy sex life and an active sex life also helps avoid prostate problems for men."
Testosterone is the principal male sex hormone and is an anabolic steroid.
Previous research has shown that it is essential for health and wellbeing as well as the prevention of osteoporosis.
The conference also heard how too much time spent speaking on mobile telephones appears to "put sperm to sleep" and can pose a risk for male fertility.
According to the preliminary results of a study by Rome's La Sapienza University and the Santa Maria Goretti Hospital at Latina, south of the capital, "there is a correlation between cellphone use and a worsening in sperm mobility."
Andrea Lenzi, president of the Italian Society of Andrology and Sexual Medicine (SIAMS), said: "The waves appear to put the sperm to sleep.
"The data are, however, preliminary and we are verifying the presence of other factors: people who speak on their cellphones a lot are often more stressed or they smoke and drink more, and that can impact sperm quality."
The study, which examined sperm from men using mobile phones from a minimum of half an hour to a maximum of four hours a day.
They also tend to be more aggressive and socially dominant said Dr Peter Biro, an Australian academic.
He said their findings, which came from studying the relationship between behaviour and metabolic rate in a number of insects, birds and animals, gave weight to the popular stereotype of the athletic "jock" and the awkward "nerd".
Dr Biro said there was enough evidence from numerous studies to suggest that those that had a higher metabolism, and thus tended to exercise more, appeared to exhibit particular behaviour traits that often included a higher sex drive.
"Some of us are couch potatoes while others are drawn to sport and exercise," he said.
"We often associate the athletic 'jock' type or person with being aggressive and social, whereas the more sedentary 'nerd' often is seen as more socially awkward and submissive.
"These are generalisations, but most people would probably agree there is some truth to them."
Dr Biro, a senior lecturer at the University of New South Wales's Evolution and Ecology Research Centre, has written on the subject with Judy Stamps of the University of California, Davis, in a review article in the journal Trends in Ecology and Evolution.
The article concludes that there is now enough evidence to suggest a link between personality and the rate of metabolism – the chemical process that converts food into the energy that fuels the body.
He explained: "Animals in captivity often engage in energetically demanding behaviour when they have unlimited food available.
"Mice spend considerable time on running wheels, for example, and other animals often pace back and forth in zoo enclosures. Given they don't need to move about in search of food as they would in nature, we might ask why they are apparently 'exercising.'
"Recent research suggests that this behaviour might be related to an individual's capacity to generate energy - its 'metabolic capacity'."
He continued: "Male crickets with sex on their mind tend to call to attract mates more and have higher metabolism than those with slower metabolism.
Metabolism and aggression are also linked. For example, it has been shown that in several species of fish and birds, individuals with high metabolism tend to be more aggressive and dominant over those with slow metabolism.
Chris Jones, head of physiology at Nuffield Health, said although there was no evidence of a direct link between exercise and sex drive, there was a link between doing regular exercise and levels of testosterone and adrenalin.
"There is evidence that enhanced testosterone and adrenalin in men and women does enhance libido."
He added: "What's particularly interesting is that exercise also seems to have an effect on stopping the problems that lead to a decrease in libido."
Sapan Sehgal, 27, an instructor at London Fields Fitness Studios, agreed there was a link between exercise and sex drive.
"If you exercise regularly you are fitter, healthier and have more confidence to approach the opposite sex," he said.
"Your hormone levels are also increased."
Sex and Heart : by Dr Piyush Jain Doctor NDTV....
Sexual activity is a normal human instinct, which protects men and women against feelings of isolation. It offers them an opportunity to be free of mental stress and tension by gestures such as touching, hugging, caressing and fantasy. Intercourse is the ultimate expression of sexuality.
