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.
Fortunately, stomach cancers are a very rare cause of gas and bloating; however, it does happen. This is caused by a tumor developing inside the stomach, causing problems such as bloating, gas, a feeling of fullness or discomfort. A hard stomach might also be one of the symptoms of stomach cancer.