sentences:  This break originated in the coke rationing of World War II, but today it is more of an incentive for exercise through winter sports.The break occurs between week 7 and 10 depending on county, to spread utilization of Swedish ski resorts.Swedes celebrate Mardi Gras (Fat Tuesday, "Fettisdagen") 41 days before Easter (rather Palm Sunday, since the fasting was forty days, Ash Wednesday to the day before Easter Saturday, Sundays not included).