I've been looking around a lot of the online BMI and weight analysis calculators and all of them say I fall in the average weight category for my age/sex/height etc. One of them said I'm within a few pounds of my ideal weight. The weird thing is, I have always looked very skinny. I'm not weak skinny, I can lift weights heavier than my average-build friends but nevertheless I still look skinny. So how is this possible?

One other thing I'm wondering is if I am an average weight, should I only be thinking about bulking myself up with freeweights rather than just trying to fatten myself up?