Novick works on adapted programs for people at the centre who have suffered a stroke or Parkinson's.
Rubin took that idea and ran with it.
Every Monday at Tristar gym, Rubin puts these fighters through the paces of a real boxing training session.
The workouts focus on cardio, upper and lower body strength, coordination and so much more.
Participants say the workouts have had a huge impact on their lives and their symptoms, with increased mobility and a new-found confidence that comes with a tough coach and training in a world-class MMA gym with other fighters.
Their fight is a daily one and Rubin is in their corner doing what he can to make sure they are ready to lace up the gloves against their illness.
Mobile users: Watch the video of Rubin's workout here
Andie's All-Stars, produced by CBC Montreal sports reporter Andie Bennett, shines a light on people making a difference in their community through sport.
Do you know someone you'd like to nominate to be featured in Andie's All-Stars? Contact Andie with the details. Follow her on twitter @AndieCBC.Suggest a correction