How much muscle mass can you gain in a year?

Answer 1

It depends on the person. e.g. their weight, muscle mass, strength, age and height.

Answer 2

With proper nutrition, training, and rest. For newbies 5-15 lbs. For advance trainees. sorry don't expect to gain more than 10lbs.

Answer 3

overall an average person gains about 700 pound depending on age,current weight,whether they are phisicly active or not so fourth