Refractory period (sex) after orgasm in which further sexual stimulation does not produce excitement. While the refractory period varies widely among individuals, ranging from minutes to days, most men cannot achieve or maintain an erection during this time, and many perceive a psychological feeling of satisfaction and are temporarily uninterested in further sexual activity; the penis may be hypersensitive and further sexual stimulation may feel painful during this time frame. An increased infusion of the hormone oxytocin during ejaculation is believed to be chiefly responsible for the male refractory period, and the amount by which oxytocin is increased may affect the length of
Refractory benefits of precast refractory shapes are related to simplified installation and repair logistics, which can reduce costs and down times. Using precast shapes eliminates forming labor, materials, equipment costs, actual placement time and expense, and associated costs during form removal, curing, and cleanup. It shifts these costs back to the manufacturer of the shape, who can absorb them much efficiently by spreading them over the overall production capacity. Refractory installation contractors have begun to consider precast refractory shapes much like they do any other pre-manufactured item such as block insulation, ceramic fiber blanket, anchors, etc. These items can be bought