The Ramadan fast is part of the religious practice of Muslims around the World. During this period, individuals abstain from food, drinks, and sexual activity between dawn and sunset for one full month once a year. In the days of Ramadan, Muslims have only two meals one before sunrise (light meal), and the other after sundown (main meal). The beginning of this month varies from year to year depending on the particular phase of the moon. Ramadan in this study started on September 1st 2008. The average length of daily fasting during the study period was 13.9 hours.