Originally Posted by 5kgLifter
This is interesting...I don't count calories and am able to lose weight. But, it's interesting that generally we feel it's necessary that we count calories if the goal is to lose weight and yet to gain weight all we need do is increase our food intake.
Here's my take on it...
When trying to gain, if you get your required protein and calories, all should go pretty well. Worrying about macro percentages isn't required, just adjust your food portions up or down according to how fast you are gaining in relation to how fast you WANT to gain. If you aren't gaining, just add more food. It doesn't really matter all that much which foods, just eat more.
When trying to lose weight, you don't want to just slash your portions. Lose too fast and you'll start to lose muscle. You'll want to cut down slowly so you'll maintain your muscle and strength. So, you'll have to have a general idea of what it is you are eating on a regular basis to know how much to reduce. Eventually your weight loss will stall. Again, you'll need a general idea of where to cut to get the progress started again.