Examlex
____________________ sleep consists of sleep stages 3 and 4 during which high-amplitude,low-frequency delta waves become prominent in EEG recordings.
Feminizing Hormones
Hormones, such as estrogen, that promote the development of female secondary sexual characteristics.
Puberty
The period during which adolescents reach sexual maturity and become capable of reproduction.
Endorphin Levels
The concentration of endorphins, which are natural, pain-relieving chemicals produced by the body, in one's bloodstream.
Afraid
A feeling of fear or anxiety about a possible or imminent situation or event.
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