We advise that everyone ease into and out of a cleanse, no matter how long you intend to cleanse for. You should eat very light foods like fruits, vegetables, salads, non-creamy soups, and drink plenty of water for at least 1-2 days before and after your cleanse. Avoid foods like meat, dairy, heavily processed foods (anything with more than 3-5 ingredients), and alcohol.
PRO TIP: Stock up on some fresh cut fruits &/or vegetables so you have a quick, cleanse-compliant snack if you get hungry during your cleanse.