I'm searching around for answers to various fitness questions as I try to figure out how to incorporate exercise into my life, but I grow frustrated with all the fads, conjectures and ideologies out there. Can anyone suggest some sourced, critical information out there about fitness and exercise? It would be great if it also fact-checked many of the ideas out there...for example, whether compound exercises improve functional fitness better than isolation exercises, or if there really is a difference between training for size compared to training for strength? While a lot of the ideas make sense, I want to know how well they've been tested. I think a lot of the information out there may be based on limited scientific data and then extrapolated audaciously (or seems to the few times I had the time to look for supporting studies). There also seem to be "cults of personality" out there, like Pavel (with the kettle bells), who seem to provide fine information on a practical basis, but these personalities also seem to have a power to bless a conjecture as true in the "fitness world" without going through the scientific process. Additionally, fitness seems to go through as many fads and trends as nutritional information. For instance, there is HIIT, functional fitness, cross-training (Crossfit), core training, Olympic lifts, yoga, pilattes, stability exercises, and I'm just mentioning some of the things that seem to make more sense to me.
Anyway, the point is that perhaps too much searching on the web and reading lame pop fitness books has filled my head with too many ideas that I now question. Can anyone recommend anything that will help me weed out all this cruft?