There is some good news for students preparing for exams. They can memorize their lessons by going to sleep.

According to researchers in Germany, our brain works better during sleep than in alertness. Their study illuminates the complex process through which we can retrieve or store information in our brain.

This report has been compiled in the journal of Nature Neuroscience. Most of the times during a state of wakefulness, our brain tends to resist attempts to corrupt or scramble a recent memory.

Earlier research have shown that fresh memories stored in the temporary region of the brain known as hippocampus do not gel up immediately. It has also been found out that reactivation of those memories soon after learning plays a pivotal role in transfer to permanent storage of the brain’s hard drive- neocortex.

But when the brain is active, this period of reactivation renders a fragile memory. For example brain will not able to assimilate much in this state.