Eat something sweet. Your blood sugar drops when you are tired. This gives you some added energy. Take deep breaths. After a long time of studying we begin to take shallow breaths, causing less oxygen to flow to the brain.
Deep breaths rectify the problem.
Persistence Pays Off . An unsuccessful person may give something 3-6 months to succeed. A successful person has no time limit. Students that have clear academic goals are more successful. A successful person thinks through the steps of how they will succeed.