In its March 2004 issue, Men's Journal published a cover story called "The 25 Toughest Guys in America." Four of the prominent individuals selected were wrestlers.    At No. 3 is Matt Hughes of Hillsboro, Ill., who competes in mixed martial arts and has been a champion with the Ultimate Fighting Championships (UFC). Hughes was a state high school wrestling champion in Illinois. He was a two-time All-American at Eastern Illinois University, after a successful junior college career at Lincoln Junior College.    According to Men's Journal, "when he is training, he's all business. A month out from a match, he's been known to do sets of 110 leg presses with 450 pounds on the rack, sprint quarter-mile hills 14 in a row with barely a rest, and fight fresh fighters one after another for five straight rounds."    At No. 5 is U.S. Senator John McCain of Phoenix, Ariz., a former presidential candidate and a Prisoner of War during the Vietnam War. McCain was a wrestler in high school.     According to Men's Journal, "asking John McCain to name his toughest moments is like asking Marshall Faulk to name his favorite rushing yards. How can he possibly narrow it down?"    At No. 11 is Olympic and World Champion Rulon Gardner (Cascade, Colo./Sunkist Kids). Gardner upset three-time Olympic champion and previously unbeaten Alexander Kareline of Russia to claim his 2000 Olympic Greco-Roman wrestling title. The next year he added a World title, becoming the first U.S. Greco-Roman wrestler to win back-to-back golds. Gardner lost a toe to frostbite after spending a freezing night in the Wyoming mountains during a snowmobile trip. Gardner returned to the mats after a year of recovery, and is currently No. 1 in his weight division in the United States. He is seeking a spot on the 2004 U.S. Olympic team.    "According to Men's Journal, "he was rescued the next morning with his feet literally frozen, and the initial prognosis was that he'd have to have portions of his feet and all of his toes amputated. He promptly said no to that, and no to painkillers, preferring to battle his misfortune like he battled everything else in his life. 'Why not recover 100 percent?' Gardner says today."    Making the Honorable Mention list at No. 21 is Donald Rumsfeld, the current U.S. Secretary of Defense who was a college wrestling star at Princeton.    According to Men's Journal, "love him or hate him, Rummy has taken on the U.S. military leadership, the press, the United Nations, Iraq, and Afghanistan - and he's won every time."    In addition, two former wrestlers were on the "10 Toughest Americans in History" list also published by the magazine: U.S. Presidents Abe Lincoln (No. 2) and Teddy Roosevelt (No. 3).    The following is how Men's Journal looked at the concept of toughness in its story:    "Almost nobody actually studies toughness as a concept in itself, but we have learned a lot about how it manifests itself: that subconsious reaction in the initial moment of a dodgy situation, and, further down the line, the ability to keep going in the face of pain or overwhelming odds."