Update on my reasearch

My reserach question: 

In what ways can teachers/schools influence positive effects from healthy initiatives. 

I am taking ethnographic observations on students during snack time. I want to understand the relationship between the type of snack they eat and what their tranision is like moving on to the next task. Are they able to keep up with the class during the transition? Are they able to stay on task immediately after eating snack? 

My reaserch articles are mainly about attitudes toward healthy eating initiatives and obseity rates worldly. I also have an article about teacher attitudes toward healthy eating in school.