by setting goals and providing feedback to clients. Obstacle training centrums are very popular. An obstacle course is a series of challenging physical obstacles an individual or a team need to complete while being timed. Obstacle courses can include running, climbing, jumping, crawling, swimming, and balancing elements with the aim of testing speed and endurance. Sometimes a course involves mental tests. South America Over 60% of the population of Brazil, Chile, and Peru do not meet the recommended levels of physical activity needed to maintain health. A study of a southern Brazilian population found that >80% of the population was physically inactive. Sweden A study of Swedish males found a significant decrease in total physical exercise even though recreational exercise has increased. This was due to a decrease in work place exercise and physical exercise in transportation. United States Americans have become less physically active overall between 1955 and 2005. While the rate of leisure-time physical activity has not changed significantly there has been a decrease in work-related activity, human powered transportation, activity in the home, and increasing sedentary lifestyle. During 2000 and 2005, the number of adults who were never physically active increased from 9.4% to 10.3% while the number who were engaged in the highest level of physical activity decreased from 18.7% to 16.7%. Pertaining to leisure-time physical activity, people involved in no activity increased from 38.5% to 40.0% while those who spent most of their day sitting increased from 36.8% to 39.9%. In 2000, the CDC estimated that more than 40% of the US population was sedentary, another 30% was active but not sufficiently and less than 30% had an adequate level of physical activity. There has been a trend toward decreased physical activity in part due to increasingly mechanized forms of work, changing modes of transportation, and increasing urbanization. Obesity rates have increased in relation to expanding suburbs. This has been attributed to increased time spent commuting, leading to less exercise and less meal preparation at home. In the time between 1983 and 1990 the number of trips taken by foot decreased from 9% down to 7%. Driving one's children to school has become increasingly popular. In the USA the proportion of children who walk or bike to school declined between 1969 (42%) and 2001 (16%) resulting in less exercise. UK In England, both walking and cycling have declined since 1975 being replaced by motorized transport.