Chapter 4: Diet, exercise, drugs and lifestyle

By the end of this chapter you will be able to

• Describe the parts of a balanced diet, and why the body needs each part
• Explain how regular exercise affects the heart, lungs, muscles and bones
• Explain why sleep and rest matter for the body and the brain
• Explain that medicines help only when taken as advised, and that misuse can harm the body
• Describe, in general terms, how tobacco, alcohol and caffeine affect the body, and why children should avoid them
• Use data on diet and exercise to find totals, means and comparisons

You should already know

• Digestion and nutrients, and the circulatory system (Chapter 3 of this book)
• The heart, lungs, muscles and skeleton (Year 3 and Year 4 Science)

Where this leads

• Healthy lifestyles in later life, and the body systems in Key Stage 3 biology