Drinking a very small amount of coffee before you go to sleep (not more than a quarter cup) can help to induce lucid dreams. Also, a cup of orange juice or some kind of fruit juice that is sugary can help. The caffeine and/or the sugar can assist the brain activity while the body sleeps. This can help you achieve a lucid dream if you don't over do the caffeine or fruit sugars.

Another way to induce lucid dreams is to drink a lot of water before you go to bed so that you have to keep getting up to go to the bathroom. This will help you recall your dreams better, and will perhaps help with lucid dreaming as well.