I am 64 and feel good , a few aches and some discomfort when stretching. I have ridden bikes regularly since the early seventies and still ride (probably more) now. I walk at least a couple of miles a day . One of my walks Monday through Friday is to get my morning coffee and then at lunch I either walk or a short bike ride . It helps that I am self employed (for routine) , but the added stress from that is a bit much sometimes. I am Vegan no alcohol, no smoking (anything!)and have hypothyroid condition( from stress a few years ago). I have to have blood work every couple of months and my Dr. says "it's like you are 12 !" Resting heart rate is 51bpm and low blood pressure. I can say yes, exercise helps , but also general lifestyle and genetics. Joe