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by enraged_camel 4916 days ago
Blackjack already said this, but humans can gain up to 0.5lbs of muscle per week. And this assumes perfect sleep, perfect diet, and a perfect workout regimen. A little more than that number is possible, but you have to be either genetically gifted, or use steroids. Assuming neither, the 40 pounds you gained over the past six months was mostly fat. You are probably confused because gaining muscle can make someone look less fat, as muscles are emphasized more.