Reply To: Advice for fasting YK Home › Forums › Yom Tov › Yom Kippur › Advice for fasting YK › Reply To: Advice for fasting YK October 4, 2011 11:26 am at 11:26 am #882601 kapustaParticipant What are “complex carbohydrates”? Complex carbs is whole grains, veggies, beans. Simple carbs is anything refined (white flour, sugar). They take longer to digest which means they’ll keep you fuller for a longer time. *kapusta*