A barbell comprises a substantially cylindrical elongated bar having a plurality of connectors located along the length thereof. A generally disk shaped weight plate having a central aperture and a peripheral handle is provided, and the barbell is received within the central aperture. A fastening assembly is formed on the weight plate and extends between the central aperture and the peripheral handle. The fastening assembly is selectively movable between a first position in which it engages with one of the connectors on the barbell, and a second position in which it is disengaged from the connector on the barbell.