As a nurse, I have had a lot of training in back injuries because most of us injure our backs once or twice and it cost the hospital a lot in workmans comp. A yearly education update is given. The main thing they talk about other than proper lifting and pulling is to strengthen your core back and waist muscles so injuries are harder to get. Personally, I do the stomach, lower/upper back and waist areas on the machines in the gym. Strengthening the core of your body is fashionable right now, so there are a lot of dvd's and such where you can do it at home. I do think it helps with the bike riding.