Hillary Clinton addressed rumors circulated by opponents that she was in poor health for the first time, saying it was part of their “wacky strategy.”

“On the one hand, it’s part of the wacky strategy — just say all these crazy things and maybe you can get some people to believe you,” the Democratic presidential nominee told late night host Jimmy Kimmel. “On the other hand, it just doesn’t make any sense.”

Supporters of her Republican rival Donald Trump, including former New York Mayor Rudy Giuliani and Fox News host Sean Hannity have questioned Clinton’s health, pointing to a concussion she suffered in 2012 after fainting and striking her head. Trump has also said she lacks the stamina to take on the Islamic State.

“I have to step into the alternative reality and, you know, answer questions about, am I alive, how much longer will I be alive, and the like,” Clinton said.

She also said she believed Trump was “healthy as a horse.”

Clinton said she wasn’t concerned about the release of previously undisclosed emails on a private server when she was secretary of State.

“My emails are so boring,” she told Kimmel. “We’ve already released 30,000-plus, so what’s a few more?”