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

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.jp. That's Y-A-K-U-L-T.C-O.jp. When it comes to a guide for your gut, count on Yacolt.

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

When paleoanthropologists eat lunch with biomechanists, well, let's just say the small talk

can get pretty technical.

Some of us would have cooked potatoes, and other people would bring raw salads, and they

would just spend longer time chewing their food than those.

And this got us thinking about not just a temporal amount of time

that it takes to get for your food,

but are they expending more energy than those who are eating cooked food?

Adam Van Castoran of the University of Manchester says,

luckily there's a machine to measure that.

It's a clear chamber.

You slip over your head.

Looks like an astronaut helmet.

And it measures the oxygen you breathe in versus the carbon dioxide you breathe out. That's a proxy for how much

energy you're burning. Van Castoran and his colleagues got 21 volunteers to sit in that apparatus

for 45 minutes just to get a baseline on their metabolism. And then they gave them flavorless

gum to chew on for 15 minutes at a time.

...