或者到吃饭时间干脆什么都不吃来控制体重。

14．Exercise is something that can help to make you look good, feel good and be healthy.

锻炼能够让你气色好、感觉好、身体健康。

15．Walking and riding exercises count, and so do school sports.

行走和骑自行车就算，在学校进行的体育活动也算。

16．Many teenagers are surprised to learn that when you exercise, your body produces some chemicals that make you feel relaxed and increase your ability to concentrate when you study.

很多青少年吃惊地发现，锻炼过程中体内会产生某些化学物质，这些化学物质让人感到放松，增强学习时的注意力。

17．I follow my doctor's advice and exercise for at least half an hour every day(but I seldom go to the gym!), and eat lots of fruit and vegetables. People should look after their bodies. My mother is right: don't damage your health for a slim and attractive figure. It isn't worth it. We shouldn't be ashamed of the way we look, should we?

我听从医生的建议，每天至少锻炼半小时(但我很少去健身房!)，吃很多的水果和蔬菜。人人都应该照顾好自己的身体。我妈妈是对的；不要为了苗条、动人的身材毁了自己的健康，那样做是得不偿失的。我们不应该为自己的外表感到羞愧，不是吗?

18．During your teenager years, it is important to give your body the energy it needs. If you skip meals, you don't get enough calories, and then you feel tired. By the way, 'calorie' is just another word for energy. Water helps keep your system clean. Drinking enough water will improve your skin and gives you healthy hair．

在青少年时期，给与你的身体所需要的足够的能量是很重要的。如果不吃饭，你就不能获得足够的卡路里，你因此就会感到疲倦。顺便说一句，"卡路里"其实就是能量的代名词。水有利于保持人体内系统清洁。足量饮水会改善你的皮肤，让你拥有健康的头发。

19．A good amount of sleep every night is also important for your health. When you sleep, your body prepares you for the day to come. Teenagers need 8 to 10 hours of sleep each night. As a matter of fact, loss of sleep can make you look tired, and even cause you to put on weight.

每晚保证充分的睡眠对你的健康也是很重要的。睡觉的时候，你的身体就帮助你为即将到来的一天做好准备。青少年每晚需要8-10小时的睡眠。事实上，失眠会让你面容疲倦，甚至身体发胖。