well i'm a pretty skinny guy... 5'6" and 105lbs...
I've been working out for 2 years now trying to bulk up... i eat a lot, but not often... but my metabolism is fast, though isn't not eating often supposed to slow your metabolism?
well anyways.. I've gotten a lot stronger, but not bulkier. Yes my chest and my arm is slightly bigger, but i still look small and skinny.
When I first started benching, I was very weak, my max was 50lbs. by the end of my first year, I could bench 90lbs. I pretty much capped at 90lbs. by the end of my second year, I only improved to 105lbs max. my biceps are pretty big now, but only when i flex.