or, as ESPN and the Nathan's Hot Dog Eating Contest call it, a "reversal of fortune", includes obvious signs of vomiting as well as any small amounts of food that may fall from the mouth deemed by judges to have come from the stomach. Small amounts of food already in the mouth prior to swallowing are excluded from this rule. Training and preparation Many professional competitive eaters undergo rigorous personal training in order to increase their stomach capacity and eating speed with various foods. Stomach elasticity is usually considered the key to eating success, and competitors commonly train by drinking large amounts of water over a short time to stretch out the stomach. Others combine the consumption of water with large quantities of low calorie foods such as vegetables or salads. Some eaters chew large amounts of gum in order to build jaw strength. Perhaps paradoxically, maintaining a low body fat percentage is thought to be helpful in competitive eating; this is known as the belt of fat theory. For a marquee event like the Nathan's Hot Dog Eating Contest, some eaters, like current contest champion Joey Chestnut, will begin training several months before the event with personal time trials using the contest food. Retired competitive eater Ed "Cookie" Jarvis trained by consuming entire heads of boiled cabbage followed by drinking up to two gallons of water every day for two weeks before a contest. Due to the risks involved with training alone or without emergency medical supervision, the IFOCE actively discourages training of any sort. Organizations All Pro Eating All Pro Eating Competitive Eaters include Molly Schuyler, Eric "Silo" Dahl, Jamie "The Bear" McDonald and Stephanie "Xanadu" Torres (deceased). IFOCE The International Federation of Competitive Eating (IFOCE) hosts nearly 50 "Major League Eating" events across North America every year. Other challenges Eating contests sponsored by restaurants can involve a challenge to eat large or extraordinarily spicy food items, including giant steaks, hamburgers and curries in a set amount of time. Those who finish the item are often rewarded by getting the item for free, a T-shirt, and/or their addition to a wall of challenge victors. For example, Ward's House of Prime located in Milwaukee, Wisconsin, has a prime rib meat challenge. The current record is 360 ounces by Molly Schuyler in June 2017. Various challenges of this type are featured in the Travel Channel reality show Man v. Food,