Abstract: An exercising hula-hoop assembly with a radio frequency signal transmitter and a remote receiver unit includes an exercising hula-hoop, at least one depressible switch arranged on the interior surface of the exercising hula-hoop, a switch contact assembly arranged within the inner space of the exercising hula-hoop. The switch contact assembly is operable by the depressible switch, so that a triggering signal is generated each time the triggering switch is depressed. The radio frequency signal transmitter generates a radio frequency signal when receiving a triggering signal from the switch contact assembly. The remote receiver unit receives the radio frequency signal transmitted from the radio frequency signal transmitter for counting and displaying.