If you are experiencing shortness of breath and you have flared ribs it coulb be because of improper breathing.
1. Diaphram breathing
This is caused by breathing through your diaphram and low abdominal strength.
1. Abdominal workout
There are many youtube videos to help with this but stomach vaccumes can help with this as well.
2. controlled breathing
Practice holding your ribs down and breathing through you back instead of your stomach can help significantly with this.