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.
Cancer has many factors that causes excessive fatigue, such as: 1  weight loss, 2  breakdown of the tissues with release of energy, 3  hormonal imbalances,  depression and anxiety, which by themselves can cause 1  fatigue, sleep disruption can also lead to sleepiness and fatigue,