This is the second article in our exclusive Flexible Dieting (IIFYM) series. Be sure to check out the first article Fad Diets and Flexible Dieting: What Works and What Doesn’t  to understand the underpinnings of this nutrition approach.

Macros are a hot topic as the concept of “flexible dieting” aka “IIFYM” (If It Fits Your Macros) is gaining mainstream attention. The beautiful and fit Cameron Diaz reportedly follows macronutrient principles. So what’s the buzz all about?