I'm 13 years old, and a HUMONGOUS Steve Perry/Journey fan. I'm a little disappointed in Journey's newest lead singer, Arnel Pineda. He just doesn't add up to Steve Perry in my opinion.
Computers can sleep, hibernate, or shut down. Sleep allows you to quickly resume using your laptop at the cost of some electricity. Hibernate is like shutting down your computer, but you can still resume working where you left off. Thereâs no right answer in all situations.
REM sleep is an active mind inside a paralyzed body, while nREM sleep is a resting mind inside a functioning body. This is why sleepwalking is possible during nREM sleep and not during REM sleep: your body is paralyzed during REM sleep but not in nREM. As for why sleepwalking occurs... well, we still don't really know. See Wikipedia: Sleepwalking for much of the current knowledge.