When you flex your muscles you are contracting them. When your muscle fibers gain tension through Actin and Myosin crossbridge cycling they may shorten due to the tension. This is called muscle contraction
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I was trying to think of something good but all I came up with was this meme
Explanation:
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<span>Drowsiness. Nausea. Dry mouth. Insomnia. Diarrhea. <span>Nervousness, agitation or restlessness.</span></span>
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Decentralization can help reduce deforestation when user groups engage with local government