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.
Fatigue may be related to: 1  Use of alcohol or drugs. 2  Excess physical activity. 3  Jet lag. 4  Lack of physical activity. 5  Lack of sleep. 6  Medications, such as antihistamines, cough medicines. 7  Unhealthy eating habits.