Honestly, I have no idea. I was diagnosed like 25 years ago when I was very young and at the time it was really bad. I started doing a lot of sports from that moment on and it's got better gradually since. If you're still young (i.e. in your teens) I would stay away from heavy weights (regular stuff in the gym is fine) and focus instead on general fitness. The key thing is to be generally active. Running, skiing etc is all good but for me the real goldmine was athletics. I was fat when I was growing up and when I was diagnosed with scoliosis my parents put me into tennis class. I played tennis for many years and even though I lost the weight quickly and got very fit tennis is not a great sport for general fitness - in fact it tends to create severe bodily dysmorphia if you do not do other kinds of exercise. I then spent a summer doing athletics and it fixed my walking, my running, my jumping, my posture, everything.