It might not look like fun, but spanking can make couples closer (Image: Clandestini / WestEnd61 / Rex Features)

SPANKING is stressful at first, but it could bring consenting couples closer together. That’s the implication of two studies of hormonal changes associated with sadomasochistic (S&M) activities including spanking, bondage and flogging.

Brad Sagarin at Northern Illinois University in DeKalb and colleagues measured levels of the stress hormone cortisol in 13 men and women at an S&M party in Arizona, before, during and after participating in activities. During S&M scenes, cortisol rose significantly in those receiving stimulation, but dropped back to …