I second the recommendation for Starting Strength. Strengthening your entire posterior chain (hamstrings, "glutes", lower back and upper back will do wonders fo

I second the recommendation for Starting Strength. Strengthening your entire posterior chain (hamstrings, "glutes", lower back and upper back will do wonders for your back problems. Having said that, spending 1 hour a day fixing your problem won't be enough when you're spending the other 23 hours undoing it. Sit up straight or do as I did and get a stand-up desk.