IIFYM: If It Fits Your Macros
The idea behind the IIFYM approach is that in order to achieve a desired body, a person does not have to be restricted to only eating certain foods. The flexibility of IIFYM is what has driven many people to give it a shot. Many people eat ice cream and other various food items they crave without compromising their goals.
This does not mean that it is a free for all food fest every day. Calories in vs. calories out still applies. There is no way around that.
Another key point of IIFYM is that it focuses on each day as a whole. Do not worry about trying to portion out equal macros for each meal like many older bodybuilding diets insisted. It is not uncommon for somebody to down 100 grams of protein in one meal and 10 in another. Your body is a lot smarter than we give it credit for and it knows how to distribute it throughout the body when it is needed.
If you are looking for a new and easy approach to eating, IIFYM might just be what you are looking for. Be sure to check out the following links for more information surrounding this approach.
For further reading and exploration check out Martin Berkman's site below:
For discussion around IIFYM, check out the following thread on bodybuilding.com