In your student apartment there is a suitable place, with natural light, well ventilated, quiet and fresh that you should prepare as your place of study; you must be clear that lying on the bed is totally forbidden! Once you have the chosen place, plan your study, being realistic and contemplating breaks; we recommend the technique "Pomodoro" based on a proven system with which you can concentrate and avoid distractions, you can read more and download it here.
Eating healthy is something that you should have as a habit taking advantage of the rich Mediterranean diet, more than ever at your fingertips, but if during your exams you can introduce high doses of magnesium, phosphorus and lecithin, these will help the mental development and will favor concentration. Rosemary, which many consider to be "Mediterranean ginseng", has many stimulating properties for your brain. Other recommended foods are chocolate, egg yolk, nuts and legumes that in a short time give you energy and vitality if you feel very tired.
Do not forget to use some of your breaks to practice some sport in Barcelona, fatigue can make the sofa very tempting, but sport will help you more than a long time on the couch. Running, swimming or riding a bicycle, considered as aerobic exercises will relax you and make you secrete hormones such as serotonin, increasing your self-esteem and well-being. If you do not feel strong enough to practice it every day, alternate with a long walk along the beaches of Barcelona.
And finally, do not forget to have fun, if your planning is good, you should spend time with your friends and clear your mind.