Janet Ciel writes: The other day I was having a conversation with a biking friend who mentioned she had a dream of being a poster child for the 70′s and above age group. She said she was buckling down on her eating, biking as much as possible, and is joining a gym. She was inspired by an amazing woman she read about who is in her 90s and still competing in track and field events. You know my response was enthusiastic, as of course I always feel that our maximum potential is just another bike ride away. I am amazed at the strength and endurance increases that are possible by just doing it, what “it” is for you, over and over again. No matter what your age you can get stronger and more vibrant. But some of you have not even started. You might be in your 70s or older…