Well man, you train hard, and there's no doubt bout dat
But, the question, and the key is... ARE YOU PROGRESSING? If you are, then you WILL gain size. Also, I think dat it's a mistake to start an extended training cycle with an isolation movement. This expert trainer of mine always told me "THE MOST IMPORTANT EXERCISE IS THIS 1ST COMPOUND MOVEMENT, AND IF YOUR WEIGHT CONTINUES TO INCREASE ON IT THEN YOU WILL HAVE BIGGER PECS" P.S. He had a 700 pound plus bench to his credit, so me thinks dat he knows something bout massive pecs ![Grin ;D](http://www.getbig.com/boards/Smileys/classic/grin.gif)
True. But there is a reason why it's so hard to put on muscle beyond normal levels. Your body doesn't like it. Muscle, even at rest, requires constant metabolic support. Given the slightest excuse it will get rid of muscle. Look what happens to your leg or arm when it is in a cast or when you stop training for a few weeks. Not so with fat. From you body's perspective fat is stored energy which it sees as a good thing and most have a virtually unlimited capacity to store fat. If a person is training hard and has everything else intact he will reach his naturally limits pretty quickly. Your body is programmed to limit it's capacity for carrying muscle. Everyone that trains seriously for some time instinctively knows this, except for Basile. Then you take drugs to exceed your natural limits. Then you again reach a plateau. So you take more drugs, then HGH, insulin, peptides.... And the reason you have to do this is that the human body is simply not design to carry that much muscle. To be 5'10" 265 at single digits. Those are the aptly name mutants and even when you reach that stage it is fleeting. You will shrink quickly just by reducing drug intact forget about going off completely.
A muscle simply contracts. Whether to facilitate movement (positive), maintain a position (static), or control the lowering portion (negative). To stimulate an adaptive response you have to over load that muscle. How it is done is of less importance then that it is actually done. In a compound movement, say the bench press, you have many muscles working in unison -- primarily the triceps, front delts and pecs. The degree in which each of these muscles are stimulated varies widely from individual to individual. Some will use more pecs, some more delts, some more tricep. I do know that of the three groups the triceps are the weakest. It's the weak link. It will fail before the much bigger and stronger pec muscles are exhausted. In my case, I feel it acutely. In virtually all compound pressing movements I feel my triceps giving out first. Even as a kid I always felt push-ups in my triceps. This is one of the reason Jones came up with the pullover machine as his first Nautilus equipment. He knew in lat exercises, pulling movements, that the biceps was the weak link and wanted to find a way to isolate the lat under a full range of motion.
And I'm sure your 700 lb bench pressing friend has tremendous pecs but are they comparable to Arnold or Lou both of whom never came remotely close to those poundages? There is a correlation between size and strength but not a direct causation. No world champion squatter in the same weight class as Jay Cutler can match the development in Jay's left quad. And Jay can't even come close to squatting what these beast do.
Are you progressing continuously? Putting on muscle from month to month, year to year? Can you post a pic today and a pic taken six months or a year ago and see any discernible difference? After five years of serious training, unless there is drastic difference in the amount of anabolics and related products taken, I have never seen anybody make much progress in muscle gain after that. There may be slight or even dramatic differences in appearances attributed to diet but as far as lean muscle gain. Not much. I've pretty much been at my current weight for the last 20-25 years.
How long have you been training? And post a recent pic of you now. Then in six months post another pic and see if we can tell a difference. People move heavier weights all the time without any appreciable increase in muscle size. Power lifters/Olympic lifters are good examples. They can get stronger and stronger each year but still remain in the same weight class.
Correlation is not causation.