* Relatively constant supply of testosterone, thus oestradiol, to the [[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamus]] in the male. | * Relatively constant supply of testosterone, thus oestradiol, to the [[Endocrine_System_-_Hypothalamus_-_Anatomy_%26_Physiology#Hypothalamus|hypothalamus]] in the male. |