I wouldn't think so. Your body is made up of more organs and systems than your brain. Depending on how intensely I exercise, I need more sleep as it's repairin

I wouldn't think so. Your body is made up of more organs and systems than your brain. Depending on how intensely I exercise, I need more sleep as it's repairing itself, so I think the answer to your questions is either 'probably not' or 'it depends'. I know that in addition to all this, that apparently sleep also moves information in to your long term memory, and that in certain trades (military comes to mind), that after intense training excercises, it is encouraged if not enforced to get a 'good night's sleep' instead of 'getting stuck into the beers after a hard day's work' in order to properly 'store' what was learnt during the day. So, if you want to remember stuff, get good a good night's sleep!