This morning's 10-minute walk is happening before sunrise. In fact, I barely have early daylight.

I woke up a little bit earlier this morning. I thought, why not? I don't need to wait for the sunrise.

I've got light bulbs. I can turn lights on. I can see what I'm doing.

Of course I didn't think that. I just got up and walked over to the light switch, turned it on.

Didn't even think about it. This light bulb thing is still in the course of human history a relatively new thing.

In the 19th century, late 19th century, about 1878, Thomas Edison, the inventor, the very famous inventor,

began working on the incandescent light bulb. The light bulb. Before that,

we didn't have a light that you could just flip a switch and voila. I can see. I don't need

to wait for the sunrise. I don't know if you know the story of Thomas Edison and the invention of the

light bulb. He tried thousands, thousands of different materials, the little filament inside the light

bulb, the part that actually glows and provides light,

there are some estimates of up to 10,000.

I've also seen estimates of less than 3,000.

But whatever number it is, there was more than a few dozen.

Thousands and thousands of different things that he tried to create a filament that would glow for hours and hours and hours.

He tried bamboo.

He tried boxwood.

He tried all kinds of different vegetables. I mean, yes. Thousands of things that Thomas Edison tried. In fact, his famous quote is, I didn't fail 10,000 times. I just found 10,000 ways that didn't work.

Welcome to Walking is Fitness. This is a podcast of action providing

a little extra motivation to help you keep that fitness promise you made yourself. Hi, I'm Dave.

Today's 10-minute walk is powered by my shocks headphones. These are cordless, open ear headphones that are lightweight. They feel great.

They sound amazing. And because the speakers actually sit in front of your ears, that's why

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