Money can't buy you love, but a new study suggests lovemaking can earn you money - and not just if you're employed in the red light district.

Employees that have sex more than four times a week receive 5% higher wages, according to an academic paper by Nick Drydakis, a seniorlecturer in economics at Anglia Ruskin University in Cambridge, England. Conversely, those who don't have any sexual activity earn 3% less in wages than those who are sexually active, the study - published by the Institute for the Study of Labor in Bonn, Germany - concluded. Similarly, a Brazilian study published in 2009 found a positive correlation between sexualfrequency and wages for Brazilian employees. This may be little more than a correlation, but based on these findings, Drydakis says, 'it seems that sexual activity may be of interest to economists.'

Why the bigger paychecks? Sexually active people may exhibit more attributes that are prized in the workplace, experts say. 'Both sexual activity and higher wages convey a feeling of higher self-esteem and self-confidence, which attracts more sexual partners and more work opportunities,' says Carole Lieberman, a psychiatrist in Beverly Hills. 'Put succinctly: Everyone loves a winner.' This also ties in with long-running theories that attractive people earn more money, she says. In fact, so-called beautiful people are likely to earn 3% to 4% more than plainer folk, according to 'Beauty Pays: Why Attractive People Are More Successful,' by Daniel Hamermesh, an economics professor at the University of Texas in Austin.

Another possible explanation for the connection: Those who are more sexually active may simply be in better shape emotionally and physically, which could make them more amiable, productive and creative employees. 'This actually doesn't surprise me, if sexual activity is just one more indicator of general well-being,' says Tina Lowrey, professor of marketing at Hautes Études Commerciales de Paris, a business college in France. Drydakis agrees, adding that increased sexual activity could be a key indicator of good health. 'Medical and psychologicalliterature suggest that sexual activity is associated with good health, endurance, mental well-being, mental capacities and dietary habits,' he says.