Swinging, sometimes called wife swapping or partner swapping, is a non-monogamous behavior in which both singles and partners in a committed relationship engage in sexual activities with others as a recreational or social activity. People may choose a swinging lifestyle for a variety of reasons.
Many cite an increased quality, quantity, and frequency of sex.
According to Stossel, "not one of them said don't do it," though some said "getting sexual thrills outside of marriage can threaten a marriage".
Nevertheless, swingers whom Stossel interviewed claimed "their marriages are stronger because they don't have affairs and they don't lie to each other." the information and communications technology revolution, together with improvements in medicine, has been effective in reducing some of the costs of swinging and hence in increasing the number of swingers.
One 2000 study, based on an Internet questionnaire addressed to visitors of swinger-related sites, found swingers are happier in their relationships than the norm.