(I'm putting in all the members in here as well as some that were made up or i knew that weren't in the club (remember that it wasn't a very big club.) some of them will be mentioned regularly throughout the story while others will just be mentioned here and there. I will tell you that both Margaret and Gregg were in the club and probably the two most supportive.)
Robert went to bed as his hair turned silver and his canines became longer. As his slept his ears came to points, his muscles became larger and he grew 7 inches. His body hair became thicker and his facial hair began to develop
Margaret got to her home late after going to a friend's house. when they got home their bodies began to shift without her realizing it.
She grew taller and her muscle's became better defined. Her semi-short brown hair grew long and thick as her her eyes became yellow (same thing happens to Amanda (only she has blonde hair) and Lisa (Slightly darker brown)).
She went to bed oblivious to the changes that occured and quickly went to bed.
Meanwhile, nearby, Gregg was reading a book when his ears grew sharp, his muscles grew, and he gained an extra three inches in height.
Michael Grew 5 inches and his hair turned silver, while Don's hair turned slightly reddish and he grew 4 inches and Matthew's eyes turned yellow and he grew a whole 10 inches.
Mark only grew 2 inches as his canines grew out slightly.
Marisa, Andrea, Gabriel, Thomas, William, and Laura did not show any obvious signs of change but were also affected by Robert's wish along with a few other groups across the world.