Peter Attia

Aging is characterized by a progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death,”

Lifespan deals with death, which is binary: you’re alive, and then you’re dead. It’s final.

sometimes long before, most people suffer through a period of decline that, I would argue, is like dying in slow motion.

The first vector of deterioration is cognitive decline.

Not everyone who dies in their eighties or nineties passes through the valleys of cognitive, physical, or emotional destruction on the way there.

As we will see in later chapters, cognitive, physical, and even emotional deterioration can all be slowed and even reversed in some cases with the application of the proper tactics.

The other key point is that lifespan and healthspan are not independent variables; they are tightly intertwined.

In Medicine 3.0, our tactics must become interwoven into our daily lives. We eat, breathe, and sleep them—literally.

Our tactics in Medicine 3.0 fall into five broad domains: exercise, nutrition, sleep, emotional health, and exogenous molecules, meaning drugs, hormones, or supplements.

So we will break down this thing called exercise into its most important components: strength, stability, aerobic efficiency, and peak aerobic capacity.