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20 hours ago · Fatigue describes a state of tiredness (which is not sleepiness), exhaustion [1] or loss of energy. [2] [3] In general usage, fatigue often follows prolonged physical or mental activity. When fatigue occurs independently of physical or mental exertion, or does not resolve after rest or sleep, it may have other causes, such as a medical condition.
- Exhaustion, weariness, tiredness, lethargy, listlessness
- Internal medicine and most other specialities
20 hours ago · An artificial reef (AR) is a human-created freshwater or marine benthic structure. Typically built in areas with a generally featureless bottom to promote marine life , it may be intended to control erosion , protect coastal areas, block ship passage, block the use of trawling nets, [2] support reef restoration, improve aquaculture , or enhance ...