When dealing with those that are afflicted with OCD---you should NEVER NEVER NEVER invite them to participate in some activity that could become a challenge---lead to day to day participation--perhaps be construed as competitive--even if competing only with self. THEY CANNOT STEP AWAY!!
Soon after moving here---Camille invited me to go to the YMCA and join her at the "Power Pump" class. This class consists of 60 minutes of lifting weights to music in a group setting. You select the amount of weight you use for each body part--but basically after a warm up song using all the body parts--then you do a song for each body part---one for squats, one for lunges, one for chest, one for shoulders, one for back, one for biceps, one for triceps, one for abs---The room is filled with men and women using all different amounts of weight for each song. After the basic few sessions of "learning the ropes"--you are comfortable enough to start looking around and comparing yourself--this leads to the "Fall From The Wagon". They only have the class 3 times a week--Camille sanely goes twice---I obsessively go 3 times. It's addictive---KNOW I am getting stronger---I am adding weight to my workouts----BUT once again I am in full blown OCD mode. Before you know it ---I will look like this: