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
Organic milk There is no evidence that conventional milk contains significantly increased amounts of bovine growth hormone. Any bovine GH that might remain in conventional milk is not biologically active in humans because of structural differences and susceptibility to digestion in the stomach." One review noted that some consumers like the taste of organic milk, while others do not, and suggested that the amount of heat treatment is likely to be a significant factor in determining the taste of the milk. Certain treatments, such as ultra-heat treatments used by milk producers, can impart a slight nutty taste to the milk. Overall, the