【英语周报】牛津高一 模块一Unit 3备课资料（课件297张ppt+教案+辅导+背景材料）

Healthy Eating It is widely recognised that a healthy, balanced diet is essential for preventing disease and illness, managing your weight, living longer and keeping things such as hair, skin and nails in good condition. First and foremost, eating healthily does not mean that your diet should consist of nothing but salads and steamed vegetables? Although both can be extremely enjoyable! A balanced diet is one made up of a bit of everything in the correct proportions. This ensures your body gets enough of what it needs and is in no way deficient. In fact, recommendations on diet are now laid out not just to prevent deficiency, but to actively promote optimal health! Nutritional requirements vary depending on a person's age, sex and overall level of fitness and with this in mind, the Department Of Health have set guidelines accordingly. Most of us recognise the term RDA (recommended daily allowance). These have been revised and are now set as DRV's (dietary reference values), that are tailored to certain population groups. However, between the ages of 19 and 50 your requirements do not vary a great deal. For the average adult, it is recommended that around half of our energy should be provided by carbohydrates, 35% from fats and 15% from protein. For most, putting this into practise will mean making sure that you eat a variety of different foods, with emphasis on foods rich in starch & fibre and smaller proportions of fats & sugars. Also, actively trying to eat more fruit & vegetables is always a good idea as they contain many of the wide range of vitamins and minerals the body needs.  It is important to remember that all foods can be included, nothing is forbidden as long as it is eaten in the right proportions! $运动与营养 　 摄取与利用食物的过程，称为营养。营养与运动，都是维持和促进人类健康的重要因素，两者相辅相成。 　　营养素是指一些供给能量，构成机体组织及负责调节生理功能的物质。人体营养素有醣类、脂肪、蛋白质、维生素、矿物质和水等六大类。前三者的功能是供给热能，后三者的功能在调节正常的生理机能。 　　蛋白质、脂肪与醣类等热量物质的比例，影响运动者机体的代谢和运动能力。运动员的食物要量，受到体型、训练量、年龄和比赛策略的影响。最重要的「运动食物」是糖类、脂肪应用较少，而蛋白质依情况而定。摄食时间最好配合运动训