I have never been a professional, but having cycle toured for months on end through Australia, New Zealand, the US, the UK, and Spain, I know full-well the pressures cycling puts on your body and why people choose to take it up and love doing it.
The popularity of cycling does illustrate some problems we have in society with pain and injury, and the kind of exercise cycling provides, although in many ways positive, is biomechanically not especially beneficial.
Cycling is popular for people who can no longer run or play sport like they once used to because of injury problems. It is inevitable that certain aches and pains will occur because of this and the unnatural biomechanics of the cycling position.
I can help you manage and prevent injury by highlighting specific areas of concern and addressing them with self-massage and corrective exercises, if like me you enjoy some time in the saddle.
Cycling, although a sensible low-impact option as you age, can actually cause a number of postural and movement issues over time, which unless addressed, can cause pain and further injury. It is functionally problematic and can definitely reduce performance in our essential, naturally evolved, human movements, i.e. standing, walking, running, and throwing.
Running is absolutely fundamental to human beings. As the title of every runners' favourite book goes, we are literally, "Born to Run". Running is also an excellent gauge for telling you where you're at with regards to your functional fitness. If you can't run without pain, you ain't functional.
Yet running seems to hurt everyone. This isn't a sign that the fault is with the act of running, it is a sign that virtually everyone isn't moving optimally. You have modern life to thank for this, we haven't evolved to sit around all day and wear comfortable padded shoes (and certainly not high heels!) for a start.
Despite running a 78Km Sky Ultramarathon, 2 marathons and numerous half marathons, I have never been a natural runner, and over the years have suffered mightily from bad running technique. Believe it or not, the older I get, the less pain I appear to be suffering as I have tinkered and perfected the correct gait cycle despite all of my dysfunctions, mainly caused by too many years of playing squash.
Still, these days, I run in moderation. It is an excellent gauge of where you are at, like I said, but it is very easy to go backwards and settle back into your own dysfunctions while running, especially when tired.