Answers

2015-06-06T03:45:13+05:30
See... the structure of our body is like that . So we can able to balance and another reason is that , we are human beings..... and chair is non living thing.......
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2015-06-07T17:28:25+05:30
Our hands and our body structure helps us in balancing. To keep our balance it takes the work of about 300 muscles in our body. 
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