If you do get blisters, then it's time to apply Compeed. If you can burst the blisters comfortably then apply a sterile wipe to a needle and give it a prod coming in from the side so as not to jab yourself. This will reduce pain after Compeed is applied. If bursting a blister is not something you are comfortable with, just put your Compeed on. It will help to reduce the discomfort. As for aches and pains, frequent stops and massaging will help. Failing that, unless the pain is a show stopper, there reaches a point where you need to embrace it!