You’ve finally got a place of your own! Whether it’s an apartment, condo or house, now you can live the way you want. No more parents bossing you around; no more roommates to get in the way of your needs. Here’s a grown-up tip: It’s not just about you. It’s also about those who live nearby. For example, say you use aerobics videos to stay in shape. Ever stop to think about how those workouts…