Do I shave one leg or two

My foot was not right this morning so I decided to go to the Physio. the Physio thinks the problem is with one of the muscles in my foot ideally I should rest and allow time for the muscle to recover but with London Marathon less than three weeks away the physio has decided to tape my leg for a few days and see if that helps. Before she can do this I need to shave my left leg which is going to seem strange.

Should I also shave my other leg so that they are the same?