As someone who has scoliosis (although not severe), I try to make a conscious effort to walk, sit, and stand straight. It is something that I need to think about. Good posture is good for good health. When I sit up straight, and it makes my back feel less stressed. I don't know if this is science, or this is just my personal story -- but my posture had improved while I was weight lifting. Perhaps, because I also had to be conscious of my posture during the weight lifting movement. Do you practice good posture?