Northbrook Physical Fitness Trainer. Dr. Frank Guerrero provides Personal Trainer, Weight Loss, Exercise Program, Stress Managment, Core Exercise, Injury Prevention, Weight Loss Counseling, to the following locations: Glenview, IL, Glencoe, IL, Wilmette, IL, Winnetka, IL. Glenview, IL Physical Fitness Trainer providing Personal Trainer, Weight Loss, Exercise Program, Stress Managment, Core Exercise, Injury Prevention, Weight Loss Counseling in Northbrook, Glenview, IL, Glencoe, IL, Wilmette, IL, Winnetka, IL, .