Staying healthy is one of the most important things in life, especially in puberty, while puberty our bodies are already changing without us knowing, that means being healthy is the way to keep ourselves resistant and safe all the time. 
Being healthy means eating healthy at a balanced diet, to have pure protein and essential vitamins. But it is possible that vegetables are more healthier than the others like meat and grains. but still should be eating 2 cups of fruit/vegetables during puberty a day.
Exercise is a common way to stay in shape after eating something healthy like, Running, Jumping, hopping, etc.
Playing sports is more efficient if you want to exercise some more, playing sports is a common way to pass the time and also has more benefits as well. sports are always played especially in puberty.
Being healthy is not only physical but also mental. Sleeping is important for mental health 8-12 hours of sleep is enough to refresh our brains, for example you have to study for an exam and you didn’t sleep, you brain will not function properly and forget all that you studied. It is still important to sleep so that the brain can be refreshed