Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yachtold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.

.jp. That's Y-A-K-U-Lt.C-O.jp. When it comes to a guide for your gut, count on Yacolt.

For Scientific American Science quickly, I'm Rachel Felton.

You know that feeling when you just can't get a song out of your head, just a short part

of it playing over and over.

Right now, my brain is chewing on the Muppet Show theme because I just watched a live stream

charity event where a bunch of my favorite comedians,

including some from Dropout, which longtime listeners know I'm a huge fan of, did a onstage

reading of The Muppet Show. So right now it's just, you know, it's time to play the music.

It's time to light the lights over and over again. So thanks for that, folks.

A lot of people call those annoying little ditties earworms, fragments of songs that crawl into

your mind and just don't want to leave. And scientists have actually done quite a bit of research

to figure out why some tunes wriggle their way into our heads better

than others. You've probably dealt with your own share of earworms. In fact, in a few previous

episodes, I asked all of you to send in some of your favorite or most infuriating examples,

and a whole bunch of you were kind enough to sing into your phones for us. Here's Carrie from New Orleans.

I have had this airworn in my head for literally, at least 20 years before I go to bed at night.

Whitney Houston.

Hey, I want to dance with somebody.

...