drink tea (camellia sinensis), the polyphenols in tea induce the cytochrome P-450 in your liver for detoxification. Eat lots of garlic (and take extra zinc to control bad breath). garlic is very beneficial for both phases of the body's detox system. Eating fatty foods the night before can be helpful depending on numerous things done/ or not done prior. Except the day of a UA, exercise is ALWAYS good. Don't know about mega clean.