A major variant of football is arena football, played by the Arena Football League (AFL). Arena football has eight-player teams and uses an indoor field 50 yards (46 m) in length, excluding end zones, and 28.3 yards (25.9 m) wide.
1 Sometimes, a medical condition may be causing the buildup of gas in the stomach. 2  For example, lactose intolerance, irritable bowel syndrome, colon cancer and gastrointestinal disorders can cause gas. 3  Treating these conditions can help relieve gas in the stomach.
Common causes of gas include: 1  Swallowed air. 2  Foods and beverages. 3  Constipation. 4  Medicines or nutritional supplements. 5  A medical condition, such as a bowel obstruction or Crohn's disease. 6  Changes in hormone levels.