Hey I wondered how quickly someone can actually gain a pound from muscle. Physically how quickly can that happen? Is it totally an individual thing? anyway, I've always wondered that.
People can typically gain up to 1 pound of lean muscle per month.
This pound of lean muscle in turn burns 50 calories a day (even if you're just sitting there on the couch). Add up to 10 pounds of lean muscle and your body is burning an extra 500 calories a day, turning you into a fat burning machine.