Valeri and Nastia Liukin have shown in the past that they understand how to prepare and how to peak .
Though it may not be fair , talented gymnasts often just do n't need as much time to prepare .
Valeri and Nastia Liukin have shown in the past that gymnasts understand how to prepare and how to peak .
Though it may not be fair , talented gymnasts often just do n't need as much time to prepare .