How Often Can MBP Be Put To Sleep?

Hi,
I have recently purchased a MacBook Pro.
How often can it be put to sleep? Will it harm the OS if I Shut Down every time I have finished with the MBP?
How long will the battery last if the MBP is left in sleep for a long period?
Thanks in Advance,

Shutting down is supposedly more stressful to the hardware than sleep, and there's really no practical limit to how often you can put it to sleep. I probably close and open my MBP several dozen times per day, on average. It makes me worry a little about the hinge, but I haven't had hinge problems since my old PowerBook G3 more than a decade ago. (And to be fair, I kind of whacked the hinge kind of hard on that machine, which probably played a role. )
As for the battery, if you leave the machine sleeping and not plugged in, there is a slight drain over time, but it's not significant unless you leave it that way for a long time - like, for example, if you leave it sleeping with no power cord connected overnight.

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Model Identifier: MacBookPro6,2
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How Often Can MBP Be Put To Sleep?

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