I am female- starting lifting heav(ier) a few months ago and cut back on the cardio and I've noticed that I'm bigger. Meaning, my arms, chest, legs and back have larger muscles (tshirts and jeans are more snug). I don't think it's fat b/c I have decent definition. But I don't want to be bigger! I want to be leaner, and smaller.

So what do I do? Get on the stair machine and treadmill for hard intervals? Increase reps/decrease weight? Any other ladies see this happening?