The athlete must incorporate variety into his program to become complete. There is no single exercise or piece of equipment that will create a complete athlete. It is unfortunate that so many individuals fail to include variety into their exercise routine. These individuals continue to train the same way, day after day, week after week. … When you train the same way all the time, your body adapts and adjusts to the load that is placed against it.
Front Squat 5×5
Hang Power Clean 5×5
Push Jerk 5×5
Ross Enamait in an old article on variety.