Another memory tip to retain information is to take a brisk walk which is good exercise for your brain and the body. If you fail to do exercise on a regular basis plaque builds up in your arteries and the blood vessels are not able to effectively pump blood as well as they could. Plaque buildup can lead to heart attacks but it can also leave the brain breathless. A vigorous walk, swimming and even dancing gives the brain an excellent workout and if you keep physically active your brain will be able to retain more knowledge.