For sure you'll see a difference-- when I started incorporating weights (to tone up) into my overall routine, I noticed a change within the first month. But it took several months to get to where I just maintain my current muscle mass. I still take Power twice a week to maintain... I especially noticed the difference after losing the post baby weight too. I lost that, and then some extra weight I'd been wanting to lose, so I could even better see my muscles! You don't even need to do anything crazy- I do fairly light weights (in comparison to some of the other woman I see)- but I'm not trying to gain more muscle now... so start off lighter, then slowly work up every 4-6wks. I do lots of reps with lighter weight to tone, not build muscle. But I also worked up to where I wanted to be- then stick to that weight (most workouts) to maintain. You got this!