You're listening to Bulletproof Radio with Dave Asprey.

Today's cool fact of the day is that your body contains more than 600 muscles, and each

muscle is made of muscle fibers, and what they actually do is they have contractability,

which means the muscle is capable of shortening or lengthening as needed.

And it's pretty much all the movement in your body happens because of this.

And the motor cortex on the right side of your brain controls muscles on the left and

vice versa, so you have this crossover in your brain.

And the signals come down, the spinal cord, and out through the peripheral nervous system

in your muscles.

But muscles can't ever push, they can only pull.

So when you're pushing a door open, your muscles are actually pulling your elbow and shoulder

against the door.

And each muscle type in your muscle killer system has a different purpose.

You're able to walk because of skeletal muscles, you can digest because of smooth muscles

that move things through your digestive tract, and your heart beats because of cardiac

muscles.

So we have all these amazing specialized types of cells, and we're going to talk more about

muscle and the muscle in your mind, which isn't actually a muscle as well in today's interview.

Before we get going on today's interview, I would love to ask you guys, if you'd like

to try to get a little bit more of this, you can go to the link in the description

I would love to ask for your help.

I've made the decision to put a lot of bulletproof products up on Amazon for you.

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