Hi folks, first time here. I had an anterior/posterior 3-level fusion with 6 screws, cage and 7" titanium rod (anterior). I am at the 7 1/2 year mark. I had the surgery and recovered for a year. I was 27 years old at the time. Soreness and tired back are just a part of life now. I work out days a week and am in the best shape of my life at 35. My question to all of you is this: I recently started cycling in the past few months. I have been completing 56 mile rides once a week with mini 25 mile rides in between. I have never cycled prior to this. I started to feel a "twinge" at the very top of my posterior incision which I assume is scar tissue as the everything was cut and pulled open. Should I be concerned about the "twinge" or will cycling that much cause muscles that I haven't used in a long time to awaken and tug on that scar tissue creating a scare in me? I get very nervous when I feel things like that. I had an MRI 2 years ago as a follow up and my surgeon said everything looked good, strong as an ox. Am I over-reacting?