Is it true that do you fast on the day of atonement based on the following text?

Yom Kippur (/jm kpr, jm kpr, jom-/; Hebrew: , IPA: (jom kipu), or ), also known as the Day of Atonement, is the holiest day of the year in Judaism. Its central themes are atonement and repentance. Jewish people traditionally observe this holy day with an approximate 25-hour period of fasting and intensive prayer, often spending most of the day in synagogue services.
yes