I'll admit it; the gym can be a pretty intimidating place. But I caution all of us to avoid falling into the trap of just doing the things we're comfortable with. This is especially important for those of us who always gravitate toward the stationary bikes, stair steppers, treadmills, or elliptical machines. Think of it this way: if the only section of the gym you use is the cardio area, you very well may be slowing your progress. Read on to learn why.