It is very important to keep your mind and body in tip-top shape so you are able to perform at your highest level. Watch what you ingest . When you ingest alcohol and non-prescription drugs you are poisoning your body, decreasing it's ability to function in a healthy balanced state. This decreases the quality of your performance and increases your stress level. The other aspect that was mentioned was exercise.
Exercise is very important to maintain a healthy body.
In past decades work was physical labor and people were able to rid themselves of excess energy by accomplishing their work. Today where we live more of a sedentary life it is harder to get rid of excess energy and clear your body of stress, Daily exercise will help clear your mind so you are able to concentrate on academics later. The problem of this is students tend to procrastinate and end up sitting down when they are out of excuses, tired and stressed. As the quote says at the top of the page, your mind must realize it has to get down to earth, meaning get down to work now, not later when your mood is different. Waiting until your mood or attitude changes will not help get your work done anymore.