By Height By Weight  

44 lbs Muscle Gain 6 foot Male 131 lbs to 175 lbs

What you can see here is a progress picture showing a weight gain from 131 pounds to 175 pounds. That's a respectable gain of 44 pounds.

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44 lbs Muscle Gain 6 foot Male 131 lbs to 175 lbs
M/22/6’0” [131lbs > 175lbs] Have a long way to go but I like what I’ve done so far