Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.

I'm Cody Gough.

And I'm Ashley Hamer.

Today you learn about the energy limit of the human body,

how they make meat-like burgers from plants,

and the surprisingly advanced technology behind... how they make meat-like burgers from plants,

and the surprisingly advanced technology behind your favorite fireworks shows.

Let's satisfy some curiosity.

Scientists have pinpointed the energy limit of the human body. Basically, they figured out the maximum mileage we can get out of our gas tank.

And although our bodies may not be sports cars, you're still going to want to buckle up because the human equivalent of miles per gallon is here.

Okay, so you know how you burn more calories when you're working out than you do when you're sitting at your desk?

Well, there's a thing called your basal metabolic rate,

and that's basically how fast your body uses energy when you're at rest.

It varies from person to person depending on their weight, sex, and other characteristics.

You use more energy as you become more active, and the ratio between your active metabolic

rate and your basal metabolic rate is known as your metabolic scope.

The closer to one that number is, the closer you are to your resting rate. The higher the number

the more energy you're using. Humans generally max out at a metabolic scope of five

but some species can get as high as seven.

For the study I'm talking about that was published last month in the journal Science,

researchers wanted to study the human body's maximum sustained metabolic scope.

In other words, the point where the body's rate of energy use over time

...