Fatigue is a symptom, not a disease, and fatigue is experienced differently from person to person as well there are different kinds of fatigue. For example, the fatigue you feel at the end of a long day or after a time zone change might feel similar to the fatigue resulting from an illness. The difference is that fatigue from stress or lack of sleep usually subsides after a good night’s rest, while other fatigue is more unrelenting and may be debilitating even after getting a good night’s rest.
Fatigue is a feeling of tiredness, exhaustion, or lack of energy. You may feel mildly fatigued because of overwork, poor sleep, worry, boredom, or lack of exercise. Any illness, such as a cold or the flu, may cause fatigue, which usually goes away as the illness clears up.
If you are experiencing a bout of fatigue and need a pick-me-up, check out one of the five foods listed in the List, each of these are good as just that. If you feel that your fatigue may be from something more serious or it lasts for a week, you should consult a doctor.