Are you a PT?
Do you want to show your clients the real gains they have made with your help?
I can do a before and after shoot for your clients, in a real photographic studio where they will do a similar set of poses in both sets of photos so that they can see the real differences in their size. Most before shots show the client at rest, shouders slumped so there is no real comparison of like for like poses, so the clients can't see the real results of your help.