4. The Masturbation affect:
The results suggest that men who masturbate less gain more. This is extremely evident when comparing the people who masturbated once a month or less (average gain of 6.22 cubic inches) to the people who masturbated a few times a month or more (average girth gain of 3.87 cubic inches). Meaning, the people who masturbated once a month or less gained 60 percent more cubic inches than the people who masturbated a few times a month or more. [Question 12 – On average, how often do you masturbate?]