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Natural changes in menstrual cycle hormones (estradiol) may influence women's daily physical activity, offering new insights ...

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Having an occasional irregular or abnormal period is usually not a problem, but an irregular menstrual cycle can signal ...

Aging affects every organ in the body, yet we still know little about how the ovary changes over time. In a new study published in Nature Aging, Yale researchers created one of the most detailed maps ...

For fitness freaks who just love monitoring every step they take for their health, smartwatches are actually worth ...

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Waking up exhausted but your sleep tracker says you slept great? You aren't imagining it. Here is how your menstrual cycle ...

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