https://www.gosh.nhs.uk/conditions-and-treatments/general-health-advice-children/exercise-centre/how-much-exercise/
How much exercise?
Kids and young people should do between 30 and 60 minutes of exercise every day. This could be brisk walking, swimming, cycling or simply running around in the playground. Your PE teacher will be able to help you decide how much exercise you need to do.
Exercise like dancing and gymnastics once or twice a week are good for keeping bones healthy. They also strengthen your muscles and are good for flexibility.
Team sports are a fun way to exercise. They help you to get outside with your friends. There’s also the chance to make new friends! Team sports also help your co-ordination, balance and ball skills. If you don’t like team sports you can always try other activities like roller-blading, skateboarding or martial arts.
Try to do lots of different types of exercise. This way you are less likely to get bored!
Remember that you can get fit even if you are overweight or obese. You don’t have to be naturally ‘sporty’. It doesn’t matter how much you weigh, exercise will improve your health.