Refractory period (sex) for treating sexual dysfunction. Sildenafil, used in the treatment of erectile dysfunction, was found in one scientific study to have caused "a decreased postejaculatory erectile refractory time (3.2 ± 0.7 vs. 6.4 ± 0.7 minutes)" in men diagnosed with premature ejaculation. It is additionally proposed that the gonadotropin inhibitory hormone (GnIH), which is considered to inhibit the hypothalamic-pituitary-gonadal axis and sexual functions causes refractoriness of the post-ejaculatory refractory period. This hypothesis also supports the increase of oxytocin and prolactin after orgasm in accordance with the previous studies. One alternative theory explains the male refractory period in terms of a peripheral
Birthing ball often used during natural childbirth. Birthing ball A birthing ball or labor ball is a large air–filled rubber ball (a gym ball about in diameter) that a woman can sit on during labor. A birthing ball allows the woman to rock back and forth seated on a softer surface. A woman on a birthing ball may need a support person to keep her steady. A birthing ball may be especially useful during back labor. Hospital policies on birthing balls vary, in part because the balls provide a somewhat unsteady seat, some hospitals are concerned about their safety if a woman