You are staring at the clock at 2:15 PM, feeling an absolute leaden weight pull down your eyelids while a nagging ache settles into your lower back, wondering how your body turned on you so quickly and why a simple workday now leaves you feeling completely hollow, soft around the middle, and utterly drained of the strength you used to take for granted. I remember sitting at my desk a few years ago, staring blankly at a spreadsheet while a wave of exhaustion so heavy rolled over me that I had to close my office door just to rest my head on my arms for ten minutes. My name is Greg, and crossing the threshold into my early forties felt like waking up in someone else's body. The muscle tone I used to maintain effortlessly with a weekend pickup game was disappearing, replaced by an stubborn spare tire around my waist, and my workouts felt less like an energizing challenge and more like a punishment my joints couldn't handle. Every doctor I talked to just smiled sympathetically and ...