Unstable Foundation By Melissa|2016-10-10T18:05:34-07:00October 10th, 2016|Comments Off on Unstable Foundation Share This Story, Choose Your Platform! FacebookRedditLinkedInPinterestEmail About the Author: Melissa Melissa Allen is a Certified Personal Trainer and Corrective Exercise Specialist residing in El Cajon, California, where she owns and operates Optimum Condition. Her goal is to empower people through fitness, education and coaching.