Windows 7 How to enable hibernation?

hibernation is in the little drop down list that you can click on the arrow next to shutdown. It appears there by default but i dont recommend hibernation or sleep to anyone.
why wouldn't you recommend it? i've used sleep ever since vista, and it works fine.

you might not see hibernation if you deleted the files while cleaning up your disk in Disk Cleanup -- I know that was a bug in Vista where if you deleted those files, hibernation options would disappear. That may or may not be the case now, and I don't want to experiment with it. But see if you cleaned it out.
the fact that hibernation and sleep have always been buggy in the operating systems and your never a hundred percent sure your info will be put into memory correctly.