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: weight loss, breakdown of the tissues with release of energy, hormonal imbalances, depression and anxiety, which by themselves can cause fatigue, sleep disruption can also lead to sleepiness and fatigue, cancer treatments, such as radiation and chemotherapy can also cause extreme fatigue.