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 Cause No. 5: Depression. You may think of depression as an emotional disorder, but it contributes to many physical symptoms as well. Fatigue, headaches, and loss of appetite are among the most common symptoms. If you feel tired and down for more than a few weeks, see your doctor.