Many of us would encounter sudden slip of the moment reminders, most of which would stem from lack of sleep. Lack of sleep in turn affects the brain, yearning for the proper amount of rest to take a break from endless thinking in daily chores and activities.

Many would say that this is only here say, but based on studies as quoted below, sleeping helps improve memory recall in more ways than one.

Throw out the ginkgo. Forget mnemonics. New research suggests there’s a simple way to lock in new info: Sleep on it.

Researchers at Harvard Medical

School in Boston asked 48 subjects to learn a list of 20 pairs of words and then tested them 12 hours later on their recall of the pairs. Some subjects were taught the words at 9 a.m., while others learned the words at 9 p.m. and then went to sleep.
The results, to be reported this week at a neurology meeting, were a wake-up call for all-night exam crammers: Subjects in the sleep group remembered 12 percent more words from the list than subjects who learned the words at 9 a.m.

Half of both groups also were asked to learn a second list of words just before testing, to study the effect of distracting information on recall. Yet again, subjects in the sleep group did better, recalling 44 percent more words than subjects in the nonsleep group. - Sleep may be key to improving recall