For checking the transcript: https://www.buzzsprout.com/2379282
Under the weather
means feeling slightly ill or unwell. It’s often used when someone has a mild sickness, like a cold or headache, and isn’t feeling their best. It means feeling slightly sick or unwell.

Examples:
1- Joe Biden canceled a White House briefing because he was under the weather, but his team assured the public it was nothing serious.
2- After eating all the Halloween candy, Tim said he felt under the weather and wouldn’t be going trick-or-treating again—at least not until next year!