1. A weight training apparatus comprising [
:]
a plurality of weight plates, at least some of said plurality of weight plates to be detachably connected to one another and lifted during a weight training exercise,
each of said plurality of weight plates having a first face and an opposite face, [ a first weight plate of the plurality of weight plates comprising ] a coupling slot recessed into said first face, and [ ,]
[ a second weight plate of the plurality of weight plates comprising ] a coupling body extending from said opposite face, the coupling body of a first weight plate of said plurality of weight plates being removably received within the coupling slot of a second [ the first ] weight plate of said plurality of weight plates, whereby said first and second weight plates are detachably connected to one another and lifted together,
each of the first and second weight plates of said plurality of weight plates also having [ the first weight plate further comprising ] an electric motor housed therewithin and an electrical connector positioned thereon and configured to communicate with a source of motor control signals, said electrical connectors [ connector ] being connected through said first and second weight plates to said electric motors [ motor ] housed therewithin such that each of said [ the ] electric motors [ motor ] receives an electrical control signal within a respective one of said first and second weight plates by way of said electrical connectors thereof [ connector ] so as to be operable to cause the coupling body of said first [ second ] weight plate to be coupled to and retained within the , coupling slot of said second [ first ] weight plate to prevent a disconnection of said first and second weight plates from one another when said first and second weight plates are lifted together.