Once upon a time (before I went corporate), I used to go mountain biking three times a week. When I was a college senior it dwindled to once a week. Now, at 23, I have ceased being a mountain biker and have become a great appreciater of bike wall-art. My bikes hang on the living room wall as artifacts of my more cardiovascular days.
Working life combined with San Antonio's heat have not helped. Instead, I work out at the gym in the basement of my office building. There are a couple excercise bikes- they make me cringe. They also make me promise myself to hit the trails once the highs peak at 85 instead of 105.