In summary, the relative refractory period is a time in which the neuron can fire an action potential, but it needs a greater stimulus. During an action potential, voltage-gated sodium channels open to let in positive ions - sodium. These depolarize the cell.
On average, reciting five Mysteries of the Rosary typically takes about 15-20 minutes depending on whether the optional prayers are also recited. Additionally, some people may take longer than 20 minutes if they decide to devote extra time for reflection and meditation on any of the Mysteries.
1 If you have counted, in total for one cycle of prayer, you would have recited it for 75 times. 2  Thus for four cycles, it would be 300. 3  Note that for the second and forth cycle, there is a need to recite the tashahhud. 4  So you will have to recite the phrase first before the tashahhud.