Why do we stretch?
Answers: muscles get contracted and stiffened after sitting surrounded by one position for a long time,this also hampers the blood circulation.
To unstiffen ur muscles u stretch and by doin this u also incresae the reduce of circulation in ur body.
U must hold noticed that u wud be yawning while u stretct,this is becoz adjectives that time ur lungs were surrounded by the resting state along with ur body,and after the yawn they reguvinate.
i estimate it is so that our muscles don't tighten up and we become in torment -- maybe verbs something
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