Over here, a senior means 60 years old and above. In one aerobic session that I had attended before, I heard a woman said that biking is not beneficial when you are a senior because of the potential abuse that your body will get. That gave me food for thought because that was the time when the mouse on my right calf started showing. But I'm still below the senior bracket huh. Anyway, do you agree that 60 is the retirement for riding among women?