<Li> Fast on Ash Wednesday and Good Friday with only one simple meal during the day, usually without meat . </Li> <Li> Refrain from eating meat (bloody foods) on all Fridays in Lent, substituting fish for example . </Li> <Li> Eliminate a food or food group for the entire season . Especially consider saving rich and fatty foods for Easter . </Li> <Li> Consider not eating before receiving Communion in Lent . </Li>

Who came up with the idea of lent