I ride a bicycle to work every day for several months now. I use a bicycle sharing system that my city offers, and it's very convenient: I don't have to worry about locking the bike or maintenance, I can use the bike only one way etc.
However, recently I've started having back pains, and I think it has to do with the fact that the bikes in the sharing system don't have good shock absorbers, and I can feel every bump in the road giving me a strong jolt.
Is there a way I can reduce the damage to my back while still using the bike sharing system?