The biggest losing deal in a person's life is using their health as a bargaining chip and their body as fuel when they are young, thinking that enduring hardship and toughing it out will lead to a stable future—without realizing they are selling off non-renewable principal. It’s only in middle age that we discover the body’s bill never sends reminders; it just suddenly arrives all at once, forcing you to use your linearly growing income to cover damages that have exploded exponentially. The sleep you’ve saved, the stress you’ve swallowed, the late nights you’ve powered through—all will come back to be settled, with interest. When you’re young, you trade your life for money; in middle age, you spend your money to buy back life, only to find the two sides never balance—because money can always be earned again, but health only declines. You think you can handle it, but in reality, your body is quietly shrinking. You think you can use future wealth to repair the overdraft of your youth, but the harshest truth is: the money you earned at the cost of your health will ultimately be spent trying to save your life, and yet, you can never get your original life back.