A long time ago when schools were first created, they didn't have sports teams or after school clubs. It was morning to afternoon and that was it.
Since most students were fascinated by the things the teacher taught them, they wanted to bring it home and show their family what they were learning in school. So then, homework was created and hasn't stopped since. A good way to deal with homework is to reward yourself for each thing you get done or take breaks every 1/2 hour in order to keep up the good work! Also, you should do your homework as soon as possible to keep everything you learned fresh in your mind, you're more likely to get better accuracy on the assignment. Even though children are developing, schoolwork should be put above going to the mall, sports practice, etc...
For starters, you must live up to what you fight for, so adopting a healthy lifestyle is the first obvious step. Also, considering the absurdly broad scope of the "health" definition (from the WHO, for example), you would have to decide on a specific focus. (i.e. alternative medicine? Nutrition and fitness? Access to global healthcare? and so on).
Among the career paths you could pick, there are:
*Becoming a health educator, by writing or broadcasting TV/ Youtube shows on wiser health choices;
*Visiting countries where people lack basic resources in nutrition and diet, urban sanitary infrastructure, and/or healthcare advances (like vaccines); or perhaps other places where there has been a rise of non-trasmissive chronic diseases (e.g. obesity, hypertension, diabetes). The purpose is really to educate people on ways to overcome the causes and to bring awareness to the problems.
*And finally, you can be a personal trainer/dieter to individuals or groups.
I hope this helps!
