“…These increases added to the excessive gain in body mass and the action of hormones such as relaxin, progesterone, and estrogen that generate more excellent elasticity of the PF tissues 7,26 can cause urinary and fecal incontinence, pain, and sexual dysfunction if the musculature is not prepared. Progesterone is responsible for decreasing the pressure of urethral closure and also for the hypotonicity of the PF, and relaxin and estrogen increase the amount of water in the tissues of the pelvic region 7,27 , which directly relates to decreases in the strength of PF muscles and, consequently, to the emergence of urinary incontinence, as mentioned by several study authors 1,8,10,28 . They are also essential during labor, as this region must have sufficient extensibility to allow the fetus to pass through the vaginal canal without lacerations.…”