I am a fairly new rider and I was wondering if numbness is normal? I assume that when my butt gets sore that is normal (I know I need to adjust my seat) but my real problem is that my toes on my left foot go numb anytime I ride over 5 miles. I don't have the best circulation in my body anyway, but I have never done anything before that causes numbness in my toes, and only in the left foot. Could this just be the way that I am seated on my bike? Any insight would be wonderful.