Interesting study showing that condition of bone marrow and articular cartilage improved in first-time marathon runners.
read.qxmd.com/read/32065245...
This post is relevant to everyone here, especially nervous or anxious beginners.
But let's be clear, running puts stresses and strains on your body that can quickly find out weaknesses that you didn't know existed. You can get injured easily and quickly and then you're left scratching your head. What this study shows is that IF you move beyond C25K to longer distances and consistent and reasonably injury-free running, then your knees can actually get healthier than they were before you started running.