Quote (TempoONE @ Jun 11 2013 12:56am)
how do you come up with macros percentages?
approximations based on macronutrient requirements for body type/weight/height and goals.
Generally, we start with caloric requirements for height/weight. Then we consider body type and metabolism. After that, we consider the persons goals. Once we get a caloric requirement for all of those, we determine minimum necessities....ie: 1-1.5g / lb bodyweight of protein for bulking (minimum). We also establish maximum levels of things, for example, 20g carbs on keto.
After all items are calculated, we prioritize based on the above structure. If a person is looking to lean bulk, as long as they hit protein requirements and keep the calories in check, they can pretty much do whatever they want. However, if that person hits 300g of protein, 300g of carbs, and 50g of fat, and still has 500 cals left over....it would be appropriate to give that person additional protein as a priority, carbs secondary, and fats tertiary. The reason for this is that protein is the most satiating of the macros. This will keep the person feeling full, longer, and thus prevent them from going over with calorie dense foods, particularly sweets.
I can literally talk about this subject all day...but I think you get the idea.