In anticipation of this summer's exams, we’ve put together a series of subject-related articles that might give you useful information for your revision, and provide some light relief from your textbooks and past papers.

All of these articles are about trainers, within the context of a particular subject. We wanted to write about something that everyone could be interested in, that's relevant in some way to all subjects, and that tied in with the upcoming London 2012 Olympics. We hope you enjoy them!