Two-A-Days, sometimes referred to as Hell Week or Double Sessions, is a term in American football to describe when a team holds practice twice a day: once in the morning, and once in the afternoon or evening. For high school football, Two-A-Days are usually toward the end of summer vacation and the beginning of the season. Some Two-A-Day sessions are held on a daily basis, even after the school year begins, with teams holding practice before and after school. Two-A-Days is used primarily to get in shape for the season, and learn new strategies.