Brush your teeth after eating.
Wash your hands before eating.
Take the stairs instead of the elevator.
Don't eat food past its use-by-date.
Do some energetic exercise at least three times a week.
Don't use screens before you go to sleep.
Have enough light when looking at a screen.
Better walking to school than by car.
Don't spend more than two hours a day in front of a screen.
Wear comfy clothes when you are in bed.
Sleep at least nine hours a night.
Sit down properly when looking at a screen.
Wear plastic shoes in the swimming pool.
Use a tissue to blow your nose and throw it to the bin.
