These studies illustrate that the normal urination of asymptomatic people varies widely with fluid intake, age, gender, and race. Nevertheless, the fact that 95% of femal and male subjects respectively voided fewer than 13 times and 12 times is applicable to this answering.
1 Medical causes â unrelenting exhaustion may be a sign of an underlying illness, such as a thyroid disorder, heart disease or diabetes. 2  Lifestyle-related causes â alcohol or drugs or lack of regular exercise can lead to feelings of fatigue.  Workplace-related causes â workplace stress can lead to feelings of fatigue.
Possible Explanations for Fatigue. There are many potential causes of fatigue, which can be divided into three general categoriesâlifestyle factors, medical issues, and mental health issues. Lifestyle Factors. If you are experiencing fatigue, your activities and other lifestyle choices may be the root cause.