Bolt turned professional in 2004. In the same year, he ran a time of 19.93 seconds in the 200 m race at the Caribbean Community Games, becoming the first young athlete ever to run under 20 seconds. On May 31, 2008, Bolt broke the world record at the Reebok Grand Prix in New York with a time of 972 seconds, which was his first world record. In August, Bolt broke his own world record of 9.69 seconds in the men's 100 meters at the Beijing Olympics. He then broke Michael Johnson's world record of 19.30 seconds in the 200m race. In 2009, at the World Championships in Berlin, Bolt won the men's 100 meters with a time of 9.58 seconds, setting a new world record. In the men's 200m race, Usain Bolt broke his own world record in 19.19 seconds. Bolt thus became the world championship double champion, but also the only Olympic and world championship double champion in history. In 2012, Bolt became the first man in Olympic history to defend both the 100m and 200m titles at the London Games, and the first man in Olympic history to do so. At the 2013 World Championships in Moscow, Bolt won three gold MEDALS in the men's 100 meters, 200 meters and 4x100 meters relay, bringing his total to eight, equaling the record shared by Americans Carl Lewis and Michael Johnson. In 2015, Bolt won the men's 100 meters, 200 meters and 4×100 meters at the Beijing Track and Field World Championships. On 15 October 2016, Bolt announced his retirement after the 2017 World Championships in London. Usain Bolt was born into an ordinary family in the town of Sherwood Contant in the Triloni district of Jamaica, where his father was a small grocery store owner. When Bolt was born, he startled his family, and his cry was very loud. His father loved Bolt very much and felt that the child's voice was so big that he could sing tenor and be a world-class singer in the future. Bolt was very naughty as a child. On one occasion, he filled his father's favorite hat with cotton and played football, and his father wanted to teach this troublemaker a lesson, but to his father's frustration, he couldn't catch him at all. When he was a teenager, Bolt was already tall and long, and his excellent physical condition made him stand out in the eyes of his PE teacher. But instead of starting out with track and field training, he joined the cricket team and was a well-known fast bowler in the school. During a training session, the coach noticed that his lower limbs moved very fast, so he suggested that he practice sprinting. When Bolt was a teenager, his father got into a lot of debt. At this time, Bolt's height has jumped to 18 meters, his father sent him to the local sports school to let him practice sprint. In Jamaica, the only way for poor people to escape poverty is by sprinting. When Bolt first arrived at the sports school, the training was not hard, often lazy. In order for Bolt to be successful in sports school, his mother took more tailoring work, made several clothes a day, and bought most of the money for Bolt to buy beef and other nutrition. Mother hurt her back because she did too much hard work. In order to repay the great maternal love, Bolt began to train harder on the track. In 2001, at the age of 15, Bolt won two silver MEDALS in the 200 and 400 meters at the Caribbean Community Games. Just a year later, Bolt's performance improved rapidly, winning the 200 and 400 meters in the high school league, the Caribbean Community Games, and the Central American and Caribbean Youth Championships. At the 2002 World Junior Championships, Bolt won the 200m gold medal in 20.61 seconds, making him the youngest-ever world junior champion. Bolt turned professional in 2004. That year, at the Caribbean Community Games in Bermuda, he ran the 200-meter race in 19.93 seconds, becoming the first young athlete ever to run under 20 seconds. In August, Bolt competed in the Athens Olympics. However, in the first round of competition, he injured his ankle and ran only 21.05 seconds in the 200 meters, and did not enter the next round of competition. In 2005, at the World Junior Championships held in Helsinki, Finland, Bolt injured his foot again in the 200 m final, with a time of only 26.27 seconds. In 2006, at the Lausanne Grand Prix in Switzerland, Bolt again ran under the 20-second barrier, and he won the bronze medal in the 200 meters with a time of 19.88 seconds. Bolt then won a silver medal at the 10th IAAF World Cup. In 2007, Bolt's sporting life took a turn. At the beginning of the year, Bolt proposed to coach Mills to practice the 100 meters, and then participated in the 23rd Vadinoiania Games held in Crete, Greece. It was Bolt's first time competing in the 100-meter race, and he finally ran a time of 10.03 seconds to win the championship. In September, at the World Championships in Osaka, Bolt was runner-up in the men's 200m final to American Tyson Gay, finishing in 19.91 seconds. Bolt also finished second with the Jamaican team in the men's 4x100-meter relay. On May 3, 2008, in the 100 m race at the Jamaica Invitational Championships in Kingston, Usain Bolt recorded a time of 9.76 seconds with the help of a tailwind of 18 m/s. On May 31, Bolt broke the world record at the Reebok Grand Prix in New York with a time of 9.72 seconds. On August 16, Usain Bolt broke the world record again with a stunning time of 9.69 seconds in the men's 100m final at the Beijing Olympic Games. On August 20, Bolt broke the men's 200 meters world record with a stunning time of 19.30 seconds, and he completed the feat of winning the 100 meters and 200 meters gold MEDALS in one Olympic Games and breaking two world records at the same time. In the relay race, Bolt teamed up with his teammates to finish in 37.10 seconds, breaking the world record of 37.40 seconds set by the United States team 15 years ago. In doing so, Bolt became the first man in history to win the 100m, 200m and 4x100m relay gold MEDALS at the same Olympics and break the world record at the same time. On 29 April 2009, Bolt was injured in a car accident and had surgery on his left foot. On May 17, Bolt won the men's 150 meters at the Manchester Road Race in 14.35 seconds, bettering the previous world best time set by Italian Menna in 1983. On August 16, 2009, at the World Athletics Championships in Berlin, Usain Bolt ran 9.58 seconds in the men's 100 meters, becoming the first man to run 9.6 seconds in the 100 meters. On August 21, at the World Championships in Berlin, Usain Bolt broke his own world record in the men's 200m race with a time of 19.19 seconds, becoming the first player in the history of the 200m race to break 19.20 seconds. He also became the third sprint king after Maurice Green and Justin Gatlin to win the men's 100m and 200m gold MEDALS at the same World Championships. On August 24, Bolt and his teammates won the men's 4×100 m gold medal in 37.31 seconds, setting a new world Championships record. The previous World record was 37.40 seconds set by the United States at the 1993 World Championships in Stuttgart. On May 19, 2010, at the 2010 IAAF Grand Prix in Daegu, Bolt easily won the men's 100 m title in 9.86 seconds, setting a new meet record. On May 23, Bolt easily won the men's 200m race at the IAAF Diamond League meeting in Shanghai in a time of 19.76 seconds, setting a new meet record. On 8 July, Bolt won the men's 100m race at the 2010 IAAF Diamond League meeting in Lausanne with a time of 9.82 seconds. Former world champion Tyson Gay won the men's 100m race at the IAAF Diamond League meeting in Stockholm on August 7 with a meet record time of 9.84 seconds. And Bolt's time was only 9.97 seconds, finishing second, his nearly 23 months of unbeaten 100-meter record has come to an end. On August 28, 2011, in the men's 100m final at the World Championships in Daegu, South Korea, Usain Bolt, as defending champion, was ejected for the first time in his career for a false start. On September 3, Bolt finally cleared his humiliation after being sent off for a false start, winning the men's 200m final in 19.40 seconds. On September 4, Bolt led the Jamaican team to victory in the men's 4×100 m relay in 37.04 seconds, breaking their own world record. On June 7, 2012, Usain Bolt won the men's 100m race at the IAAF Diamond League meeting in Oslo, Norway with a time of 9.79 seconds. On August 6, Bolt won the men's 100 meters at the London Olympic Games in a time of 9.63 seconds, breaking his own Olympic record of 9.69 seconds. Bolt successfully defended his 100m title, becoming the second man after Lewis to defend the men's 100m title, and then again excelled in the 200m final, clocking 19.32 seconds to defend his title. Usain Bolt became the first man to defend his title at the Olympic Games by successfully defending both the men's 100 and 200 meters. Usain Bolt successfully defended his world record of 37.04 in the men's 4×100 meters with a time of 36.84 seconds. As a result, Bolt defended his titles in the 100m, 200m and 4x100m relay, bringing his career total to six Olympic gold MEDALS. On June 7, 2013, former World Olympic double champion Justin Gatlin won the men's 100m race at the IAAF Diamond League meeting in Rome in 9.94 seconds, while Usain Bolt finished second in 9.95 seconds. On June 14, Usain Bolt won the men's 200m race in 19.79 seconds at the IAAF Diamond League in Oslo, Norway, breaking a meet record. On July 27, Usain Bolt won the men's 100 meters race in 9.85 seconds at the London leg of the IAAF Diamond League. On August 11, Usain Bolt won the men's 100m final in 9.77 seconds at the IAAF World Athletics Championships, which was his first gold medal in four years since 2009. Gatlin of the United States finished second in 9.85 seconds, also setting a personal season best. On August 18, Usain Bolt won the men's 200m title at the World Championships in 19.66 seconds. On August 18, Bolt led the Jamaican team to a gold medal in the men's 4×100 meters relay in 37.36 seconds, marking their third consecutive relay victory at the World Championships. Bolt won his eighth world championship gold and six Olympic golds to become the most world sprint champion of all time with 14 titles, breaking the record of American legend Carl Lewis. On August 17, 2014, Bolt easily won the 100 m exhibition race on the beach in Rio de Janeiro in a time of 10.06 seconds, which was his first 100 m race in 2014. On August 24, Usain Bolt won the men's 100m race in 9.98 seconds at the indoor track and Field games in Warsaw, Poland, and set a new indoor world record, thus claiming both the outdoor and indoor 100m world records. On August 28, the IAAF Diamond League Zurich race began, and Bolt, who said he would participate in the 100 meters, temporarily withdrew from the race and ended the 2014 journey ahead of schedule. On February 28, 2015, Bolt made his season debut at the Gibson Relay in Kingston, Jamaica, where he and his teammates won the 4x100m relay heat in 39.26 seconds. On 14 March, Bolt competed in the Foster Classic in Kingston, Jamaica, which was Bolt's first individual event of 2015, and he won the men's 400 m in 46.37 seconds. Usain Bolt won the men's 100m final in 979 seconds at the 2015 Athletics World Championships in Beijing on the evening of August 23. On August 27, Usain Bolt won the men's 200 meters final in 19.55 seconds. On June 12, 2016, at a race in Kingston, Jamaica, Bolt ran 9.88 seconds to win, which was the second best time in the world this season. On July 23, the IAAF Diamond League London station, Bolt won the men's 200 meters in 19.89 seconds. On August 15, Usain Bolt won the men's 100m final in 9.81 seconds at the Rio Olympic Games, achieving his third consecutive Olympic title. On August 19, Usain Bolt easily won the men's 200m final in 19.78 seconds at the Rio Olympic Games. On August 20, the Rio Olympic Games men's 4x100m relay, Jamaica 37.27 seconds to achieve the Olympic triple crown, Bolt personal achievement of the great triple crown, and won the ninth gold medal of the Olympic Games. On 15 October 2016, Bolt announced his retirement after the 2017 World Championships in London. On December 3 of the same year, Bolt announced that he would change his career to become a football player after retirement. It is reported that he will go to the German side Borussia Dortmund trial. Personal life In 2010, Bolt was revealed to be romantically involved with British bargirl Rebecca Parsley, who revealed that she and Bolt had a secret relationship for a year and that Bolt had proposed to her in June 2009, but that the relationship ended after seeing Bolt with another woman. In 2011, the 25-year-old Bolt was introduced by a friend and the 28-year-old Slovak met, and quickly fell in love, in April 2012, the two kissing photos appeared in the media, their relationship was exposed, and at this time they have been secretly dating for six months, but the Jamaican people blame Bolt suffering from white women complex. Many people are not optimistic about Bolt's brother-sister relationship. In May 2012, Bolt broke up with Slovak. Bolt wants to focus all his energy on his career without any interruptions. In 2012, after the London Olympics, Bolt went public with his relationship with young British model Megan Edwards. But a few months later, Bolt was dumped by the beauty. Meghan says Bolt's food is so simple that she can't stand it. Meghan is an office worker in the UK, it is difficult to have time for herself, and Bolt can not accompany her because of long-term training, she can not bear the distance between the two. Differences in lifestyle and food culture ultimately doomed the relationship. In August 2016, Bolt's girlfriend was exposed, the woman named Cassie, also Jamaican, 26 years old. On August 23, 2008, Bolt donated $50,000 through the Red Cross Foundation of China to children in the Sichuan earthquake affected areas, and invited six children to travel to Jamaica the following year. On 29 October 2009, Bolt and former 110m hurdles champion Colin Jackson attended a press conference organized by The Zeitz Foundation in Munich