To grow up healthily, we must have an optimistic attitude towards life.
To grow up healthily, we must first have an optimal attitude towards life. It is also necessary to study hard.
It is also necessary to study/work hard.
There is no doubt that hard work is also a necessary condition for a successful life. Physical exercise also contributes to our healthy growth.
Doing sports also helps us grow up healthily.
Besides, doing sports also contributes to a happy life.
Besides, doing sports is also conducive to a happy life, because/because without health, life is meaningless to us.