1.She's very fit because she does a lot of exercise.
2. I needed some fresh air, so I went for a walk.
3. He had an accident when he was driving to work. 4. I felt sick because I had eaten four big pieces of chocolate cake.
5. It's a good idea not to drink a lot of water before you go to bed!
6. He was overweight, so he went on a diet and started doing some exercise.
7. She often gets the bus because it's too far to walk.