I'm not sure where to start. I've been pretty sedentary until 4 months ago. I'm not overweight, just inactive and out of shape. When I was a teen I would go with my father to a gym and his trainer gave me things to do. I got pretty toned and built for a 5'1" skinny girl. lol... I would like to have some of that built and toned look again. I also miss that feeling the next day after a great workout. You know, the feeling of accomplishment through muscle tiredness and pain. My core, buns, and legs really need the attention. Actually, I could use a bit of toning all over. I just don't know where to start. Any beginner exercises I can do that will help my core or balance would help me get started. Thanks in advance!