Define Element

question 97

Short Answer

Define element.

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Definitions:

Melatonin

A hormone produced by the pineal gland that regulates sleep-wake cycles, often used as a dietary supplement to aid sleep.

Physical Activity

Any movement of the body that requires energy expenditure, including everyday activities, exercise, and sports.

Sleep Cycles

Sleep cycles refer to the patterns of movement through different stages of sleep, including REM (rapid eye movement) and non-REM stages, which repeat approximately every 90 minutes in a typical night's sleep.

Monophasic Pattern

In the context of hormonal cycles, a pattern characterized by a constant dosage of hormones, typically seen in certain types of birth control pills.