For me, winds are more of a pain than hills, so they can definitely put the hurt on you. We had some crazy Santa Ana winds down here in SoCal about a month back, where winds were gusting up to 45 mph. A 30 minute commute home from the subway station turned into an hour and I was so thrashed when I got home, I was literally shaking . . . Do you have a long commute and how fast do you go? If you're going too hard, the aching legs may be nature's way of telling you to chill out for a few days and let your body recover.