Tisha b???Av is more rigorous fast than the others: it lasts a full twenty-four hours (unlike the others that are from dawn to nightfall); it includes restrictions other than eating, like Yom Kippur???the so-called five ???afflictions???: no washing, no wearing shoes, no sexual relations, etc.; and there are special rules governing the pre-fast meal (no meat or wine, only one cooked dish), unless