Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

[EX Q]: Paragraph: HIIT can blast calories, build muscle and boost endurance with impressive efficiency in just 20 minutes a day, but the catch is finding the right level of intensity outside the comfort zone, fitness trainers say. Sean Bartram, author of the book “High Intensity Interval Training for Women,” said to find that level people should think about what it is like being chased by a rabid dog. “It’s just below that,” he said. “To gain maximum benefits you have to push your body to a place that’s almost uncomfortable.”   The American College of Sports Medicine predicts HIIT will be a top fitness trend in 2015. Bartram said people are drawn to it for its efficiency and almost endless variety of exercises. The bursts can be sprinting or spot jumps and the recovery can be rests or slower paced movements, he explained. “You could alternate 30 seconds of sprinting with 30 seconds of walking, or you could engage in a series of bodyweight exercises, such as push-ups, doing each for 30 seconds with 10 seconds of rest in between,” he said. Dr. Michele Olson, a professor of exercise science at Auburn University at Montgomery, Alabama, said it’s not high intensity unless the heart rate is elevated to near 90-plus percentage of its maximum. “Many people think they are engaging in HIIT but they are really doing traditional interval training, where the heart rate is around 75 to 85 percent of max,” she said. Maximum heart rate is about 220 minus age, according to the American Heart Association. Olson said that if done properly, HIIT can increase the effectiveness in losing abdominal fat and prompt favorable changes in cholesterol and insulin levels. “There is research showing that you can cut your exercise time nearly in half,” she said. About 20 minutes of HIIT can reap similar benefits of doing 35 to 40 minutes of moderate, steady-state cardio, she added, noting the training level must be intense. Hayley Zawadzki, personal training manager at New York Health and Racquet Club fitness centers, suggests that anyone starting HIIT should have a fitness analysis. “If you have a history of high blood pressure or medications, you cannot push to the absolute max,” she said. Claim: Key to High Intensity Interval Training found outside comfort zone.
[EX A]: With High Intensity Interval Training (HIIT), which consists of short bursts of intensive activity followed by short periods of  recovery, fitness experts say the harder the push, the greater the reward.

[EX Q]: Paragraph: "For the third year in a row, the Milwaukee Brewers’ lights-out closer John Axford faced a challenge when it came to getting to spring training on time. In 2010, it was an auto accident; in 2011 a case of food poisoning. This season it was red tape involving his 8-month-old son, J.B., also known to Axford’s Twitter followers as ""Little Ax."" The boy was born in Milwaukee, and is a U.S. citizen. The elder Axford, however, is a Canadian. And his trip to Arizona was delayed because he didn’t have a passport for the baby when he was planning to fly from Canada into the United States. His Twitter followers (@JohnAxford) got a play-by-play of his travel travails. Among the offerings: ""Thank you Homeland Security for not letting my AMERICAN son into AMERICA! #3YearValentinesCurse #WontBeSeeingYouTodayWarmWeatherInPhoenix""  He was more expansive in an interview with the Journal Sentinel, which is what prompted us to turn our version of the radar gun -- the Truth-O-Meter -- on Axford. ""Homeland Security requires passports for every age, no matter what,"" Axford said in the interview. ""You can arrive by land or sea if you're under the age of 15 with a birth certificate, but if you go by air Homeland Security requires passports for everybody, no matter what the age."" Is he right? Passports only by air, though birth certificates suffice by car or boat? Now, it’s  Axford is a sports figure. But his statement touches squarely on U.S. policy. So we checked with the State Department, Homeland Security, border control and several federal government websites. Turns out the rules are different for border-crossing babies, depending on the mode of travel. If you’re traveling by air, you need a passport. Period. And, yes, you have to get a photograph of the kid. A kid passport costs $105. However, if you’re coming by land -- such as the border crossing in Detroit -- the rules are less strict, and less expensive. ""U.S. children ages 15 and under arriving by land or sea from a contiguous territory may present an original or copy of his or her birth certificate (issued by the Vital Records Department in the state where he or she was born), a Consular Report of Birth Abroad, or a Naturalization Certificate. If the child is a newborn and the actual birth certificate has not arrived from the Vital Records Department, we will accept a Hospital issued birth certificate."" Each year, the federal government issues about 450,000 passports to infants, a spokeswoman for the State Department said in an email. The department even provides helpful hints for how to take a passport picture of your little one. Kiddie passports are valid for five years. In the end, Axford got to spring training the hard way, again. His father drove the family across the border to Detroit and they caught a flight from there to Arizona. Our conclusion  Axford’s trip back to the mound took a detour. He said it was because of travel delays and said federal law required his baby to have a passport to fly back into the country. He learned a valuable lesson about border crossing: The feds are always right." Claim: All travelers -- even babies -- arriving in the U.S. by air must have a passport.
[EX A]: Milwaukee Brewers pitcher John Axford says even babies need a passport to enter the U.S. by air

[EX Q]: Paragraph: "For most couples, the ideal honeymoon getaway might entail a week of unwinding at a beach resort or a stay in a secluded mountainside cabin. Not Bernie Sanders. He chose a colder route. Sanders and his wife, Jane Sanders, spent their first days as newlyweds in the Soviet Union, claims George Will in a recent Washington Post column. Will’s Aug. 7 column focused mostly on the legacy of Robert Conquest, who died Aug. 3 at age 98, and whose writings on Soviet prisons documented the atrocities of the Stalin regime. A reader asked us to look into the accuracy of the final paragraph of Will’s column, which invoked Sanders’ ""honeymoon."" It reads: ""Conquest lived to see a current U.S. presidential candidate, a senator, who had chosen, surely as an ideological gesture, to spend his honeymoon in the Soviet Union in 1988. Gulags still functioned, probably including some of the ‘cold Auschwitzes’ in Siberia, described in Conquest’s ‘Kolyma.’ The honeymooner did not mind that in 1988 political prisoners were — as may still be the case — being tortured in psychiatric ‘hospitals.’ Thanks to the unblinking honesty of people like Conquest, the Soviet Union now is such a receding memory that Bernie Sanders’s moral obtuseness — the obverse of Conquest’s character — is considered an amusing eccentricity."" We wanted to see if Sanders actually honeymooned on the turf of the United States’ former adversary during the final years of the Cold War. Sister cities The trip took place while Sanders was mayor of Burlington, Vt., from 1981 to 1989. Toward the end of his mayoral tenure, the small city on Lake Champlain launched a sister-city program with Yaroslavl, located 160 miles northeast of Moscow. The program, which is still operating today, has facilitated exchanges between the two cities involving ""mayors, business people, firefighters, jazz musicians, youth orchestras, mural painters, high school students, medical students, nurses, librarians and the (Yaroslavl) ice-hockey team,"" according to its website. Along with sister-city relationships with Bethlehem in the West Bank and Puerto Cabezas, Nicaragua, the Yaroslavl program was part of Sanders’ unorthodox attempt to take on international issues from a small city in New England. Sanders also actively pursued his agenda outside of the country, writing letters to world leaders and even traveling to Cuba to meet with the mayor of Havana. ""Burlington had a foreign policy,"" he wrote in his 1997 book Outsider in the House, ""because, as progressives, we understood that we all live in one world."" The bond between Burlington and Yaroslavl solidified when Sanders and his wife, as members of a 12-person delegation from Burlington, paid their Soviet counterparts a visit in 1988. The timing of the trip was unusual. Bernie and Jane were married May 28, 1988. The delegation left Burlington the next day. ""Trust me,"" Sanders writes in the book. ""It was a very strange honeymoon."" When reached for comment, Sanders’ campaign said that the dates for the trip had already been set, and the couple ""set their wedding date to coincide with that trip because they didn't want to take more time off."" In a 2007 interview, Jane Sanders also recalled the peculiar timing: ""The day after we got married, we marched in a Memorial Day parade, and then we took off in a plane to start the sister city project with Yaroslavl with 10 other people on my honeymoon."" Bernie Sanders also refers to the trip sarcastically as ""quiet and romantic"" in his book. The ""honeymoon"" was dotted with meetings, interviews and diplomatic functions. A June 2015 profile in The Guardian described the former mayor’s meeting with Yaroslavl city officials: ""After receiving a rundown of central planning, Soviet-style, from Yaroslavl’s mayor, Alexander Riabkov, Sanders notes how the quality of both housing and health care in America appeared to be ‘significantly better’ than in the communist state. ‘However,’ he added, ‘the cost of both services is much, much, higher in the United States.’ "" An education in central planning probably wasn’t the only item on Sanders’ itinerary. Yaroslavl is home to historic churches and buildings, and the Sanderses would have been in for some good sightseeing, said Ariel Cohen, a senior fellow at the Atlantic Council. Will made it sound as if Sanders was visiting to condone Soviet torture practices, but the Burlington trip was more of a dialogue-building exchange program. The Vermont weekly newspaper Seven Days reported in 2009 that the sister-city relationship ""helped local residents who sought to ease tensions between the United States and Soviet Union by initiating citizen-to-citizen exchanges with a Russian city."" Also, the Soviet Union was barely intact at the time of the trip. Negotiations had opened up between President Ronald Reagan and Soviet leader Mikhail Gorbachev a few years earlier. ""It was at the beginning of perestroika,"" said Michael Briggs, a spokesman for the Sanders campaign, referring to the restructuring policy Gorbachev instituted in the mid 1980s. Gulags still existed and political prisoners were still held in 1988, said Ariel Cohen, a senior fellow at the Atlantic Council. But a watershed moment came when Gorbachev allowed physicist Andrei Sakharov to return from internal exile two years earlier. ""The power of the Communist Party was being questioned and the confrontation with the West was winding down through negotiations,"" Cohen said. In 1987, Reagan and Gorbachev signed the Intermediate-Range Nuclear Forces Treaty, and in 1988, Reagan himself spoke in Moscow’s Red Square. One year later brought the fall of the Berlin Wall. Three years later, the Soviet Union collapsed. Participation in the Burlington-Yaroslavl program has waned over the years, though it was viewed as a ""glamorous endeavor"" by many in Burlington at the time, program leader Howard Seaver said in 2009. Will could not be reached for comment through his researcher. Our ruling Will wrote that Sanders chose ""to spend his honeymoon in the Soviet Union in 1988."" Sanders and his wife did travel to Yaroslavl, a city in the Soviet Union, after their wedding in 1988. In the sense that the trip came after the couple were married, the trip was a honeymoon. The two have also referred to the trip that way, albeit sarcastically at times. But it was an unusual honeymoon, to say the least. The trip’s primary purpose was diplomacy, not leisure, and included about 10 extra guests. Will’s claim is accurate but is missing context about the trip’s underlying purpose." Claim: "George Will Says Bernie Sanders chose ""to spend his honeymoon in the Soviet Union in 1988."
[EX A]:
"Will wrote that Sanders chose ""to spend his honeymoon in the Soviet Union in 1988."" Sanders and his wife did travel to Yaroslavl, a city in the Soviet Union, after their wedding in 1988. In the sense that the trip came after the couple were married, the trip was a honeymoon. The two have also referred to the trip that way, albeit sarcastically at times. But it was an unusual honeymoon, to say the least. The trip’s primary purpose was diplomacy, not leisure, and included about 10 extra guests. Will’s claim is accurate but is missing context about the trip’s underlying purpose."

