Fantasy

[balance diets] since you used exercises
(So keeping balance diet can let us be far away...) 我的个人问题 觉得这写比较好 So [ it - keeping balance diets 用太多了] can decrease the chance of obtaining diseases caused by malnutrition, such as anemia. (Or). So it can let us [stay away from]...
However, [that] is not enough.
We also need to have strong bodies and [immune systems] to stay healthy (你在后面用了复数). 不要用 and 开头. It can [strengthen] our bodies and improve our immunity. [Thus/therefore], influenza may have [a lesser] chance to catch us.