Even though I accomplished many of the short term goals I set for myself, there were still some things that I did incorrectly. To this day I have muscle imbalances due to improper training. I knew the basics and that helped me reach the goals I wanted to reach, but I needed someone to teach me the process of working for proper muscle balance. Currently, the muscles in my chest are over developed when compared to the muscles in my upper back. It used to cause back pain in my mid to upper back, but I gradually corrected this muscle imbalance. Now my back pain is virtually non-existent! This is just one example of many ways you can do harm through exercise, so be sure you either consult with someone who knows about exercise, or hire a certified personal trainer before you begin an exercise program.