He was a gymnast himself until about 15 , when he first began coaching .
Although a 15 - year professional career as an opera singer sticks out on Collins ' resume , his gymnastics - specific list of accomplishments is just as impressive .
Collins was a Collins himself until about 15 , when Collins first began coaching .
Although a 15 - year professional career as an opera singer sticks out on Collins ' resume , his gymnastics - specific list of accomplishments is just as impressive .