A friend asked whether a frugal lifestyle is tiring. To be honest, not at all—it's actually quite satisfying.

Recently, I experienced a gout attack, and the pain from "crystal dissolution" was truly uncomfortable. Those who have had similar experiences should understand. It was during this process that I began to systematically study how my body works. Through observation, recording, and adjustments, I gradually understood the secrets to maintaining health.

It's really like conducting research for a long-term project—investing time and effort to understand mechanisms, discover patterns, and optimize strategies. Once you truly understand the operating principles of your body's system, every subsequent decision becomes an efficient "arbitrage." Health itself is the best reward, and the savings on medical costs are an added benefit. So, this isn't about "spending money," but about "making money."