As a part of a scientific inquiry solution, I need help in a couple parts. Caffeine

As a part of a scientific inquiry solution, I need help in a couple parts.

Caffeine

consumption is the topic. I need something interesting and factual about caffeine. It needs to be a study that was done and I need help identifying why the researcher believed that it had a viable solution to the caffeine consumption in children. How it is availabe through schools and there is no limit. The negative and positive effects from it.