The survey found that from 2000 to 2018, nearly one in three U.S. men aged 18 to 24 reported no sexual activity in the past year. Lack of sexual activity, or sexual inactivity, was also on the rise among men and women aged 25 to 34 years during the survey period, the report in the journal JAMA Network Open found.

Possible reasons for the decline in sexual frequency may also include stress of juggling work and intimate relationships, as well as the prevalence of other forms of solo entertainment.

“There are now many more choices of things to do in the late evening than there once were and fewer opportunities to initiate sexual activity if both partners are engrossed in social media, electronic gaming, or binge watching,” Jean Twenge, from the department of psychology in San Diego State University said in an editorial accompanying the report.