It will make you very aware of your body and how you use it every day. We often stand or sit incorrectly for long periods of time, allowing postural muscles to become underused and superficial muscles to do jobs they weren't designed for. This causes all sorts of problems as we progress through life. Stress or any emotional upheaval can cause muscles to lock up and cause pain. The relaxing nature of a Pilates class will help to undo some of this tension. It will give you stronger abdominal muscles, creating a natural girdle of strength around your torso and all the deep intrinsic muscles which help to support the spine will also be stronger. Your spine is what holds your body up so strengthening these muscles is so important. When doing Pilates regularly you will find that you just generally feel better, both after a class and in everyday life.