(From my watch, it is the 30th of July, so I am technically right to say that your UMAT is tomorrow.)
Good luck with your UMAT tmr! From reading posts on Atarnotes, I know many of you have done lots of preparation for it, so I wish you the best. Since you have one more day before the UMAT, my recommendation would be forget about UMAT and do something that you enjoy (like playing tennis or music). Your brain needs to take a break from all the hard work before the 3 hrs exam. And remember this, UMAT is just an exam. This is not life and death, and you can do it again next year if you failed it. So do not feel too depressed after the exam (maybe you actually did pretty well in it. Who knows?)
Anyway, enough with my talk. Good luck and make us proud.