Man you guys are making it sound like it is going to be impossible for me to know if I am gaining muscle or not. I guess this is why people cycle. I was hoping to get more gains before going over to the dark side.
I mean, I am 5'9" and I read online about people getting 16-17" biceps naturally, while maintaining low BF%. You guys are making it seem like it would take me several more years to put on enough mass to actually obtain that goal (about 2.5 more inches for me). Is it that these people are really building for that long to get that way, or are people cycling and calling it natural?