近几年来，肥胖逐渐趋于年轻化。越来越多的美国家长聘请私人教练帮助孩子塑形，激发他们的运动兴趣，建立自信，你的孩子需要吗？
American kids shaping up with trainers
Nearly a million American youngsters, some as young as 6, rely on personal trainers to shape up, lose weight or improve in sports, according to figures from the nation's leading sports club association. Many parents, worried about their children's weight and fitness, say that working with a trainer motivates their kids and helps them build confidence. So they are willing to spend the $40 to $60 an hour that trainers generally charge.
The Bostonbased group's latest figures, from 2005, show that 824,000 children between the ages of 6 and 17 use trainers — a figure that accounts for about 13% of trainers' clients. With many high school students not getting exercise at school, more parents are turning to trainers to help their children stay fit. More than one third of American children are overweight and experts warn of future health problems ahead from diabetes to heart disease.
Kathleen Ballew said that her 7yearold son, Jordan Sims, who would begin the second grade in the fall, could benefit from some oneonone time with a fitness professional. She had noticed that he needed help with balance and coordination in soccer and karate. She also observed that he did not want to do things that kids normally did, like climbing on park equipment. After Jordan had begun working out at Baylor Tom Landry Fitness Centre in Dallas with a trainer about a year before, he moved more naturally and confidently. His trainer, Lauren Jacobson, works with about half a dozen kids under 18. She said she noticed that training helped build confidence and a sense of accomplishment, along with helping kids get in better shape.
根据短文内容，回答下列问题。
1．What do people think of the youngsters' training to help them shape up?
It_is_generally_believed_that_training_helps_build_confidence_and_a_sense_of_accomplishment.
2．Why do so many American youngsters need trainers to help them keep fit?
Because_they_can't_get_enough_exercise_at_school.
3．What's the function of the third passage?
Give_an_example_to_prove_that_a_trainer_plays_an_important_role_in_helping_children_get_in_better_shape.
