16 It is the fitness level of our body that helps us fight these diseases.-|||- 17 We need to be fit to have a healthy body.Similarly, if we are healthy we shall naturally be-|||-attracted towards maintai the fitness of our body.Health is the state of our body at a given time.We may not-|||-have any disease but still have a weak body,which is ready to be targeted by viruses. 18 This does not-|||-definitely mean that we are not healthy.It means the fitness level is not in accordance with(与······致致our age-|||-and the climatic conditions we live in.-|||-It is important for everyone to devote some time to health and fitness. 19 For instance, we must-|||-exercise daily regardless of our age and working style.There are different levels of exercises for different age-|||-groups and we must do them according to our own health and age.-|||-Additionally, it is important to relax our body.We should have at least six to eight hours of sleep every day.It-|||-helps in improving our immune(免疫)system and protects us against diseases. 20 This,in turn,gives us-|||-new goals of health and fitness.-|||-A.Fitness levels decide the quality of life.-|||-B.Health and fitness are interrelated to each other.-|||-C.It also helps in keeping us calm and relaxes our mind-|||-D.For instance,we may have a tendency to catch a cold easily.-|||-E.If we keep our body fit,we can enjoy life in a better manner.-|||-F.There are some activities which everyone should do in our life.-|||-G.This makes our body suffer and we catch lifestyle and other diseases.

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