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.

Yacold 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-L-T.C-O.J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific American's 60-second science. I'm Christopher in Taliatta.

The flat lithium ion batteries that power smartwatches are built by stacking the battery components,

positive and negative electrodes, current collectors, and a separator.

It's akin to piling up sheets of paper.

You get a stack that you can bend or roll, but you can't stretch it.

But now researchers have designed what could be a much friendlier battery for wearables, one that's bendy and stretchy,

instead of a little brick. They built the bendy battery by starting with a coiled wire, sort of like

a little slinky, and then layered the traditional battery components, electrodes and all that,

on the coil to build a silver

zinc-based battery. And the result?

Once the battery is flexed, it experiences very minimum stresses. Like, you can imagine flexing

the slinky. You can easily flex it.

Alazamariva, a material scientist at UC Berkeley.

That's why we were able to flex this battery for 17,000 times while we were cycling it in

situ without decreasing electrochemical performance.

She and her team built even stretchier batteries using serpentine designs.

Imagine squiggly lines of battery embedded in a transparent

...