Let me tell you a story. Back in the 60's some reknowned kung fu master came over from China and wanted to teach his art to American students. He posted a sign offering free lessons and waited. Nobody came. Frustrated, he got the idea ot charge $5/lesson and within days his yard was full with trainees.
Your problem is that you're offering free, sensible, sound advice to people that's really valuable and lacking in bells and whistles. If you want to generate real traffic I have a few ideas on how to change what you're doing:
1) Come up with a cool name for your system - I like simplefit, but work on something more testosterone-laden - use words like spartan, warrior, combat, soldlier, or violent.
2) Relaunch the site. Instead of this, with lots of useful, cleanly laid out stuff, make a fancier site. Load it with testimonials from people nobody has ever heard of - just make them up, nobody will know. Intersperse the testimonials with long lists of claims about how massively beneficial and easy your system is. It will melt away bodyfat, increase strength, develop endurance, increase sex drive and ability, reduce inflammation, cure diabetes, cure cancer - whatever you can think of.
3) Stop giving it away for free. Charge some fee. To do this, you'll need to make, say, an e-book. But don't sell it for some nominal amount - charge like $200 for it. Or more. For that price, sell the e-book, a CD with motivational speeches from you (recorded in your bathroom in your spare time), a template for recording their workout progress, maybe a cookbook (take something public domain and play with it a little), and, best of all, for only $250/year, offer people the chance to use this forum!!!
When sales drop a little bit add new books/ programs - maybe a self defense something or other (taught to you by a shaolin monk or mexican wrestler or maybe something more exotic - like the toughest guy in the world who works out in a monastery in Tibet who took you on as a student after being banned from all fighting sports for being too dangerous). Try a course on meditation, or golf technique, or whatever else you know about.
The best part is that I only want 10% of whatever cash you rake in for giving you this idea
I've actually considered doing a mockup of a site like this, just for fun, because I haven't done any web design in a while. By the way, if you've never checked out Matt Furey's site or Dinosaur Training or Turbulence Training and don't get the humor in this post, please forgive me and pretend you never read it.