Why is it called “Clean Monday?

With Clean Monday begins the Lent for the Orthodox church, while…
at the same time mean the end of the Carnival.
The shrove Tuesday was so named because the Christians “cleansed” both physically and mentally.[1] it Is a day of fasting and day of a holiday for Christians.
The fasting lasts for 40 days, those were the days of fasting of Christ in the desert.
The Clean Monday is celebrated 48 days before the Sunday of the Resurrection of Christ, the christian Passover.