How do you participate in ash Wednesday?

Answer 1

Fasting is willingly abstaining from food for a period of time. An absolute fast is abstinence from all food and drink for a defined period. Other fasts may be only partially restrictive, which limit particular foods, such as meat.

Catholic AnswerOn Ash Wednesday and Good Friday, you may only eat one full meal a day. You may have two small "snacks" at the other meal times, but the two snacks combined may not equal another full meal. You are also not permitted any food between meals. As Ash Wednesday and Good Friday are also days of abstinence, you are not permitted meat at the meal or the two snacks on those days. According to Canon Law, all who have completed their fourteenth year are bound to abstinence, and those who have obtained the age of majority must fast until the beginning of their sixtieth year.

Answer 2

you have to attend the mass, of course. then participate in the part where the priest puts ashes on our forehead.