What is IIFYM (if it fits your macros)?

Iā€™m a flexible dieter! IIFYM (if it fits your macros) AKA flexible dieting has become a popular way to eat. Most of the time pictures involve epic looking burgers, pizza and donuts. This often gives the misconception that flexible dieting is about eating as many treats as possible as long as you drink enough protein shakes. This isnā€™t the case! …