text: how can i lose 3 pounds by tomorrow?   3 pounds?  that's a lot.  and to lose that much that quickly isn't healthy.  but i'm still gonig to answer your question...  drink a lot of water, exercise (cardio... no weights... you don't want to gain muscle mass), don't eat anything.  like i said, it's not healthy.  looks like you should've started the diet a little earlier in the week.  regardless, there's my opinion.