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Refractory period (sex) In human sexuality, the refractory period is usually the recovery phase after orgasm, during which it is physiologically impossible for males to have additional orgasms. [1][2] This phase begins immediately after ejaculation, and lasts until the excitement phase of the human sexual response cycle begins anew with low ...
Sports periodization. Periodization is a cyclical method of planning and managing athletic or physical training and involves progressive cycling of various aspects of a training program during a specific period. [1][2] Conditioning programs can use periodization to break up the training program into the off-season, preseason, inseason, and the ...
Diagram illustrating how the uterus lining builds up and breaks down during the menstrual cycle Menstruation (also known as a period, among other colloquial terms) is the regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. The menstrual cycle is characterized by the rise and fall of hormones. Menstruation is triggered by falling progesterone ...
Puberty is the process of physical changes through which a child 's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a female, the testicles in a male.
Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...
Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of reproduction. [ 1 ][ 6 ] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [ 7 ] Menopause is usually a natural change. [ 3 ]
Tempering is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool in still air. The exact temperature determines the amount of hardness removed, and depends on both the specific composition of ...
This is because ovulation is irregular at this time, and the endometrial lining fails to develop normally. But normal problems at other times can also cause scanty blood flow. Anovulation due to a low thyroid hormone level, high prolactin level, high insulin level, high androgen level and problems with other hormone can also cause scanty periods.