11 May 2015 - BBC iWonder - Can food improve your exam performance?

When you're faced with a pile of revision, feeding your body as well as your brain may be the last thing on your mind. But can you give yourself an advantage simply by eating certain foods? And does drinking plenty of water really increase your chances of getting good grades?

Whether you're a student or the parent of a child sitting school exams, are there quick and easy food tips to help maintain those all-important energy levels and improve concentration and memory?