Work in pairs and complete the sentences.1. The best way to stay healthy, lose weight, and improve your brainpower is to ______________________________________.2. Walking is good for protection against ___________ and has benefits for _______________ as well.3. If you can take a walk in a park or in the countryside, it will provide you with ______________________________________.4. Scientists estimate that walking as little as _________ minutes a day will give greater protection against ill health.5. If you were to buy one piece of equipment to aid your walking programme, it should be a(n) ______________________________________.