I just checked out your site, http://davegfitness.com/ , you look pretty built man, and according to the site you're older. that's awesome.
Check this thread out, it'll tell you what you need to know: http://paleohacks.com/questions/17035/jack-up-your-testosterone#axzz2Tn1xhu1T .
'Low' total testosterone might not be a problem, there is also free T and other hormones that are related (DHEA) might also be significantly important in muscle building etc. You could be walking around with 'low' T and with resistance exercise you could 'unlock' T from being bound and then return to your 'low' level the days following. The article URL from @Stephen 4 is the perfect solution.