Tighten and tone your lower body with these tried-and-true moves. Trim and Tone Your Lower Body. For most women, the lower body is where all those little indulgences—a heaping bowl of pasta here, an extra slice of cheesecake there—come home to rest. That’s because thousands of years ago, we needed fat storage to survive droughts and long winters. Women with more lower body fat had the evolutionary advantage, which was passed down through the generations. Now that we have food at every corner, we no longer need this reserve. But our bodies have not caught up with the times.