Angie Hall, a beloved health and physical education teacher, gymnastics coach, and 20-year veteran of Hartford Union High School, is retiring early after an ALS diagnosis has left her relying on a motorized chair and a computer she operates with her eyes to communicate.Hall, 47, is battling ALS also known as Lou Gehrig's disease progressively take her muscle function from her feet up through her body. Despite the physical toll, her community bel…