Refractory period (sex) autonomic feedback mechanism, rather than through central chemicals like oxytocin, serotonin, and prolactin. Autonomic feedback is already known to regulate other physiologic systems, such as breathing, blood pressure, and gut motility. This theory suggests that after male ejaculation, decreased wall tension in structures such as the seminal vesicles leads to a change in the fine autonomic signals sent from these organs, effectively creating a negative feedback loop. Such a mechanism is similar to decreased gastric and bowel motility once gastric contents have passed through. Once the feedback loop has been created, the refractory period remains until the loop is broken
Birthing ball 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 falls during birth. It is