The most important event in artistic is the all-round, where the scores of all the apparatus are added to each other to find the complete gymnast.
Only women compete in the rhythmic events.
Trampolining is what it sounds like, with gymnasts jumping up and down performing tumbles and spins.
Medals in the gymnastic events are decided by judges, who mark the gymnasts out of 10.
One of the most popular events of the Games is the gymnastics gala, where all the Olympic champions and world champions perform routines for fun. They are often much more modern and unusual than the serious stuff.
Who are the British hopes for Athens?
The best British hope is female gymnast Beth Tweddle in the asymmetric bars. She won bronze at the world championships last year and silver in the European championships in May 2004.