Donald TrumpDonald John TrumpPoll: Both parties need to do more on drug prices Senate approves .3 trillion spending bill, sending to Trump White House: Trump will delay steel tariffs for EU, six countries MORE says Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonWhite House would like to see Biden ‘in the boxing ring’ in 2020 House Judiciary chair subpoenas DOJ for FBI documents The suit to make Electoral College more ‘fair’ could make it worse MORE’s regular absences from the campaign trail are a sign that she doesn’t have the “stamina” to be president.

“She goes out and she sees you guys for about 10 minutes, she sees you for a little while, it’s all rehearsed and staged,” Trump said in an interview broadcast Sunday on Fox News’s “Media Buzz.”

“They’ll pick a couple of people out of the audience that are like, you know, 100 percent. She’ll sit around a little plastic table, they’ll talk to the people for a while. It’s ridiculous,” he added.

“And then she goes away for five or six days and you don’t see her. She goes to sleep.”

The Republican primary front-runner said the former secretary of State “does not have the strength or stamina” to handle the rigors of the presidency.

“I’m saying she’s not strong enough. No, no, not a health issue, I say she’s not strong enough to be president. We need a president who can go 24 hours a day seven days a week — she can’t do it,” he said.

“She just goes away,” he added. “You need somebody who can go all the time, because our country is in such trouble — I mean, we don’t have the choice of saying let’s take five days off.”

Trump has used a similar line of attack against GOP primary rival Jeb Bush, calling the former Florida governor “weak” and “low-energy.”