https://www.pitara.com/tags/fatigue-reasons/Recent content in Fatigue Reasons on Pitara Kids NetworkHugoen-usSat, 13 Jun 2026 21:46:31 +0530https://www.pitara.com/science-for-kids/5ws-and-h/why-do-we-get-tired/Fri, 03 Aug 2001 12:03:42 +0000https://www.pitara.com/science-for-kids/5ws-and-h/why-do-we-get-tired/<p>Sumit was a tireless bundle of energy. He was always up to some mischief or the other. As he grew, to his mother&rsquo;s relief he became a more relaxed child, and over the years his energy level seems to have come down considerably. However, now he feels tired and fatigued. At times he wonders why he gets so tired so soon when there is so much that he wants to do?</p> <p>What is it in our body that causes fatigue? Why do we feel listless and sapped of strength at times? Fatigue is caused by a kind of poisoning produced by our organs. When a muscle in our body works, it produces lactic acid. If we remove the lactic acid from a tired muscle, it is able to start working at once.</p>