Ah, after using my "wisdom" and laying low and then gradually getting back into things I'm back on my fixed gear bike like notheing ever happened. I'm so happy to be active again with running and biking. But most importantly totally stoked that I'm back on my fixed gear bike - my true love! So, back to my PSA: if you are an active person who is aging, don't take for granted that you can still make leaps and bounds into new hights without proper planning.