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Why do people feel tired?

Male  24 years old 2018-05-30
During the recent period, I always feel very tired. Why do people feel tired?

1 Answer These messages are for reference only

  • BY Penelope Judson 2018-05-30
    This is related to the energy consumption of the body. Fatigue is the exhaustion of energy no matter after physical activity and mental activity. In the process of using the body's reserves, a lactic acid is produced. The accumulation of lactic acid is a physiological and biochemical manifestation of fatigue.
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