Read the following passage and choose the correct answer for each of the blanks.

Revising for exams is not as easy as it looks. You will need to work out which routine suits you best, and then stick to it. Some people like studying at night when it’s quiet, whereas others find the early morning is a good time to get things done. You might enjoy (1)…….. to music while you revise, but this can be (2)……... Can you really concentrate (3)……….. two things at once? So think (4)……… you turn your radio on. Your (5)…….. is also important while you are revising. This may be a more than usually (6)………. period of your life, when you should take extra care to eat properly. No missed meals, or junk food, or (7)…….cups of coffee! Get plenty of exercise as well. If you have got fed up with (8)……. you’re doing, or find it hard to concentrate, go for a walk to clear your head. (9)……. exercise will help to keep your body fit and your brain working (10)………… Finally, you also need to take time off. Go out occasionally, see your friends, and make time to relax. Then you will return to your studies fresh and full of enthusiasm.

Regular exercise will help to keep your body fit and your brain working (10) ______.