Revising

Revision is over for tonight. I should probably do more, but I can't see anything else going in to my brain tonight. I'm just wondering why I'm finding this so difficult. I can remember loads of other irrelevent stuff like the train timetable at home from 3 years ago, or my last 5 postcodes, but nutrition doesn't like me. Or I don't like it. I think it's possibly due to having 5 practical exams in 4 days, a written exam and the added bonus of another oral exam next week. So many different species, so little time.