YES I completely agree. It is all about balance of calories in and calories out AKA work! Now the %'s of carbs, fats and proteins is up for debate depending on what performance level you are trying to achieve and what particular activity. For example the contents of a diet for a NFL running back vs. an elite marathon runner will be different. But so will their training. This can become an in depth conversation for sure. However, carbs are being demonized for overweight issues in the USA.... that are directly related to over consumption of all nutrients... thus accumulated mass.