I have always taken a certain amount of pride in the fact that I don't go to the gym, I like having a neck and I don't need to jack certain parts of my body up to the ceiling just to run on a treadmill. I have always thought, "why be inside when you can be outside?"
Apparently, there are some very good reasons to take shelter. Aside from all the general health benefits of resistance training such as getting stronger, increasing metabolism and blood sugar control, and improvement of bone density, it can directly affect your riding season.
Studies show that lifting weights builds muscles with stronger and thicker fibers, as well as muscles that are better able to use oxygen, allowing athletes to perform better in endurance sports. Coordination, balance and flexibility are also improved. Additionally, it strengthens your connective tissue, you know, all those ligaments and tendons people keep tearing and snapping. Long story short, training with weight makes you faster and keeps you on your bike longer.