is it possible to revise when ure tired?

i mean i only got 2 hours sleep last nite coz of my stupid dad snoring and now ive got the option of going out wiv friends 2nite r staying in revising. since ive only got 1 week left i shud stay in but im tired.

Depends on how tired you are. Ideally it might be best to go to bed as early as possible tonight, get 8-9 hours sleep and wake up fairly early tomorrow and start then. Oh, and get some earplugs

Don't fret too much, a week is plenty of time.