Anyone worked out and it improved their posture?

I don't have pictures, but my posture has never been great, and I work at a job that has me more hunched over than a standard computer desk job. However, since I have been doing the NROWLFW, I can definitely tell you the posture is improving. I also feel less upper back pain from my posture at my job. And more interestingly, I have a genetic "bull hump" at the bottom of my neck that seems to be diminishing. Everyone in my family has this, yet mine is delightfully improved. Yay weightlifting!

Yes, kickboxing, running, and yoga/pilates have all helped improve my posture. Kickboxing strengthened the back muscles, so when I ran I noticed I didn't feel the same amount of pressure on the back and just looked less silly running! That translated to the rest of my life. My back used to hurt driving for an hour, now I can drive 10 hours a day without hurting my back, or study for long periods of time. My back used to not even able to support sitting in a regular chair. Anything to strengthen core (my kickboxing does lots of planks, and so does the yoga/pilates workout videos I like)!!!!

Hi, I have big boobs and nursed my son. My lower back was soooo painful after 9 months of pregnancy and 3 months of nursing and I noticed in photos that my shoulders/posture was really slumped. I went to see a physio and he gave me daily moves (3 moves starting at 5 reps each) to improve my core muscles. They really helped me A LOT. When I showed them my friend, she said they were pilates moves, so I got a pilates DVD but it seemed a bit too gentle for me. Instead I started going to Ashtanga yoga classes and the improvement was really fast plus it seemed to burn more fat than the pilates. I never thought I'd be able to do a back bend it used to be so painful and my shoulders are now much lower and pulled back. Aside from anything else, the yoga stretching helps to remind you to correct your posture when you aren't in class.

Since then I've also done body pump classes and now I train with DVDs or in the gym by myself. I think classes are the safest way to go at first if you can manage it as the instructor corrects your posture as you go through the poses/moves to stop you doing more harm than good.

I also invested in a new mattress for my bed. I really blew my budget for it and it took me about a month to get used to it, but it's AMAZING, well worth it.

Workin with kettlebells has definitely improved my posture.

Me too. The thing about kettlebells (and probably weights in general) is that to be able to lift them--especially overhead--you have to really focus on your posture. You have to tighten the muscles in your legs and core in order to build the foundation for supporting the weight. Do that enough, and voila, your everyday posture improves.

No pictures. Sorry.
But weight lifting has improved my posture, and that of my 16 yr old son with scoliosis.