To continue on with the bizarre Sealy survey results, we may as well let all the lefties know what their sleep style says about them. Career wise, those who favor their left side are more likely to work in corporate roles and professional services, such as marketing and advertising. They are also more likely to be at least degree educated. As for their smoking and coffee habits, we have no idea. Given the corporate job factor, we'd guess that coffee is definitely an important part of the left side sleeper's life, though.
As far as health benefits go, there are some good and bad things to go through with you. Some sources insist that the left side is no good for sleeping, as it puts pressure on major organs, such as the lungs, liver, and stomach.