Human beings across the entire lifespan have only four phases of metabolism and everyone goes through them in exactly the same way.

We need metabolism to survive. We need metabolism to function. We need metabolism to Commune. My name is Jeff Krasno. Today on the show, we're exploring metabolism.

Now, simply put, metabolism refers to the total amount of chemical processes that occur within living organisms,

including humans, to maintain life.

It involves the conversion of nutrients from the food that we consume into energy,

as well as the synthesis and breakdown of other molecules necessary for life and cellular function.

Now, metabolism can be divided into two main categories, catabolism and anabolism.

During catabolism, complex molecules like carbohydrates, fats, and proteins are broken down into

simpler substrates that are then leveraged by the cell to produce adenosine tryphosphate,

ATP, are cells' primary energy currency. Now, in enabalism, the molecules are synthesized. In this phase, simpler molecules are

used to build more complex ones. For example, building blocks like amino acids are aggregated

together to form muscle tissue, enzymes, neurotransmitters, transport molecules, and others.

Now, these catabolic and anabolic processes are tightly regulated to maintain a balance,

ensuring that the body has enough energy and enough building blocks for cellular function. Now, that's not too complicated, right?

It's like Lego, construction and destruction, yang, and yen.

Today's episode is a series of excerpts from fascinating conversations I've had about human metabolism.

Now, first up is Dr. William Lee, physician, scientist, and best-selling author,

who presents recent research that upends our traditional understanding of human metabolism.

So if you've ever thought that you were just born with slow metabolism or that your metabolism is slowing down as you age, well, get ready to have your world turned upside down.

So without further delay, I present Dr. William Lee on the four phases of human metabolism as well as what you can do to optimize your

metabolism over time. I used to say things like, well, I was just born with a slow metabolism.

That was just kind of the hand that I was dealt by the dealer of life.

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