I believe the weight gain = penis loss completely. I used to use a suction tube on my cock & when I was completely erect my cock would touch the end of the 7" tube. Now, 60# + later I can't come within 2" of the end of it. I AM working on what I call-Growing my cock back. Lost about 15# over the past 2 months & I know my cock 'seems' bigger already. Wife found out & wants me to start exercising MORE!