Should i turn off my desktop or keep it on?

I just got the HP Pavilion HPE h8-1300z Desktop, im running windows 7 home premium...here are some specs: AMD FX-6120 six-core processor [3.6GHz, 6MB L2/8MB L3 Cache] 6GB DDR3-1600MHz SDRAM [2 DIMMs] 1TB 7200 rpm SATA hard drive 300W Power supply ...Question is what is healthier for the computer? Turning it... show more I just got the HP Pavilion HPE h8-1300z Desktop, im running windows 7 home premium...here are some specs:
AMD FX-6120 six-core processor [3.6GHz, 6MB L2/8MB L3 Cache]
6GB DDR3-1600MHz SDRAM [2 DIMMs]
1TB 7200 rpm SATA hard drive
300W Power supply
...Question is what is healthier for the computer? Turning it off or keeping it on over night and while at school? I'm not so much worried about electricity bill as i am the computers health. Thanks
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