It depends upon what you mean by “gymnastics.” Toddler classes that involve jumping, crawling, and climbing are a great way for parents and children to bond and introduce some activity. Preschoolers interested in the sport may want to try a tumbling class that may involve very basic balance beam work. If your child enjoys tumbling class, it may be time to enroll him or her in introductory gymnastics around age six. Of course, you should always take your child’s interests and abilities into account.