It doesn't have to point up but it can stop you from sliding forward. Or off it onto the top tube. Same with it being too far back. That can affect your reach to the handlebars.
It being too low can knacker your knees. The position of your legs can put extra strain on the joints and cause them to feel stiff over time. The height of the saddle is my cycling pet peeve because of the problems it can cause the knees. |