Studying for a stressful exam while you are home alone somehow makes it more stressful.
My husband has flown off to a more northern city for the night to do some work, and, although I slept okay, I don't have anybody to distract me in the evenings or to practise fundoscopy or reflexes on. (Yes, I bought an opthalmoscope - the smaller, portable one that didn't break the bank but still does a good job, and I won't have any trouble off-loading it when I upgrade or don't need another one. I want to learn how to do this fast enough so that I don't torture the examinee.)
I would use the cats, but I don't think the tendon hammer would make a good toy - imagine walking into an exam with a hammer that looked as if you had been chewing on it for the week prior to the exam! :P
I have been keeping sane by putting the Harry Potter movies on in the background (we are going to see the latest movie in the evening after my exam) while I study, so that I am a little distracted.