Does the Gender of Your Exercise Buddies Matter?

Since I've been regularly exercising for some time now, I've met a lot of people who share my love for swimming, running, biking, and exercise in general. I love working out with someone else when I can, because it not only helps pass the time, but having an exercise buddy really motivates me to push harder than I would on my own. I tend to work out with other women, but gender doesn't matter to me. What about you?