Hi Chi,
Are you doing water fast or juice fast? With juice fast, it's a lot easier on the body and the nutrients in the freshly made vegetable juices can help speeding up your cleansing process by replenishing it with lots of good vitamins and minerals. They give you energy.
I don't recommend water fast even though I tried it a few times.
p.s. Please use only freshly made vegetable based juices during fast, not the prepackaged bottles you purchase from the health food stores. If you like to add small amount of fruit juices such as apples when you juice your vegetables, it's fine.
Ah enemas! I assume you meant homemade colonic. This is the area people either love it or hate it. Start slowly and gently otherwise you might experience some cramping. Cramping is never a good thing.