Americans just aren’t getting any.

Despite the explosion of hook-up apps and dating sites, the number of adult Americans who haven’t had sex in the last year reached an all-time high in 2018, according to a new study by the General Social Survey.

The record lack of action is the climax of a decades-long trend among an aging population and growing numbers of single people, said the group, which is part of the University of Chicago.

Millennials aren’t without blame.

The survey showed that nearly 25 percent of the people who went without sex were 20-something men.

That’s 8 percent more than women of that age.

Those ages 18 to 29 who abstain more than doubled in the last decade, the study said.