Olympic rhythmic gymnastics is typically restricted to female participants, although Japan has begun developing programs in which men can compete and in Spain, men are allowed to participate in women's competitions. The men's program has yet to be formally recognized by the FIG, however, and men cannot compete in the Olympics as a rhythmic gymnast. Gymnasts start at a young age and become age-eligible to compete in the Olympic Games and other major international competitions on January 1 of their 16th year (For example, a gymnast born on 12-31-2004 would be age eligible for the 2020 Olympics). Gymnasts in Russia and Europe typically start training at a very young age and those at their peak are typically in their late teens (15–19) or early twenties, but since 2004 it is common to see gymnasts achieving their peak after reaching their twenties.