You mean this statement? > gaining muscles is a pretty effective way to increase your energy consumption in idle mode and thus lose weight quicker It's not co

You mean this statement? > gaining muscles is a pretty effective way to increase your energy consumption in idle mode and thus lose weight quicker It's not counter to what the article describes; the article is just saying that most people will also increase their energy (food) intake along with an increase in their energy consumption, resulting in no net weight loss. It's perfectly possibly that grandparent's psychology doesn't make him/her eat more as a result of more muscle.