Have you ever noticed that naturally skinny people tend to pack on muscle when they overfeed, while naturally curvy people tend to pack on fat? And those naturally skinny people tend to lose fat quickly when they diet, while naturally curvy people tend to struggle to not lose as much muscle as fat? What's going on here? Why are some people naturally better at staying lean and getting ripped, while others have to fight their love handles their whole lives? It's simple really, and quite unfair: the culprit is something called your 'P-Ratio', and it's what determines what kind of body you're going to tend toward naturally. Love it or hate it, your P-Ratio determines nearly everything.