By Height By Weight  

18 lbs Weight Gain 5 foot 11 Male 140 lbs to 158 lbs

Here we have a progress pic showing a muscle gain from 140 pounds to 158 pounds. That's a solid total gain of 18 pounds.

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18 lbs Weight Gain 5 foot 11 Male 140 lbs to 158 lbs
M/25/5'11" [140lbs > 158lbs = 18 lbs] (3 years) been able to stay motivated because of rock climbing