Young Adults Who Exercise Get Higher IQ Scores Young adults who are fit have a higher IQ and are more______【51】to go on to university, reveals a major new study carried out at the Sahlgrenska Academy and Sahlgrenska University Hospital. The results were recently published in the Proceedings of the National Academy of Sciences ( PNAS). The study involved 1. 2 million Swedish men doing military service who were born between 1950 and 1976. The research group analyzed the______【52】of both physical and IQ tests the youngsters took right after they started serving the army. The study shows a clear link______【53】good physical fitness and better results for the IQ test. The strongest links are for______【54】thinking and verbal comprehension. But it is only fitness that plays a______【55】in the results for the IQ test, and not strength. 'Being fit means that you also have good heart and lung______【56】and that your brain gets plenty of______【57】, ' says Michael Nilsson, professor at the Sahlgrenska Academy and chief physician at the Sahlgrenska University Hospital. 'This may be one of the reasons______【58】we can see a clear link with fitness, but not with muscular______【59】. We are also seeing that there are growth factors that are important. ' By analyzing data for twins, the researchers have been______【60】to determine that it is primarily environmental factors and not genes that explain the link between fitness and a______【61】IQ. ' We have also shown that those youngsters who______【62】their physical fitness between the ages of 15 and 18 increase their cognitive performance, ' says Maria Aberg, researcher at the Sahlgrenska Academy and physician at Aby health centre. 'This being the case, physical______(63 ) is a subject that has an important place in schools, and is an absolute must if we want to do well in maths and other theoretical subjects. ' The researchers have also compared the results from fitness tests______【64】national service with the socio-economic status of the men later in ______【65】. Those who were fit at 18 were more likely to go into higher education, and many secured more qualified jobs. (51)