don't focus on the PR too much, make sure the sites you exchange links with are themed and relevant to your site... if you get a link from an authority fitness site it will do much more for you than 10 links all PR7 but totally irrelevant to your site.
Also try to change your title, start with the keyword sthat are now at the end and put the start phrase at the end, divide them with a "|"
If you add a lot of quality content regularly and keep pursuing backlinks (try to go for oneways) you will see results, patience is a virtue
