A new study published on the US "Psychology Today" website shows that sex can reduce the chance of catching a cold. Dr. Francis of the University of Pennsylvania divided the sexual frequency of 111 volunteers into three groups: none, 1 to 2 times a week, and 3 times a week or more, and tested their saliva samples.

It was found that the immune globulin in the saliva of the group of people who took the test 1 to 2 times a week was 30% higher than the other two groups.

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