If you are finding too much information, your research topic may be too broad. Consider narrowing it to a more specific:
Time
- Civil War, Iron Age, 1920's, 18th Century
Location
- Europe, U.S., Denver, urban, eastern
Population
- age, race, gender, nationality, ethnic group, occupation
Event or Aspect
- government regulations related to dietary guidelines
Person or Group
- young adults, elderly, childhood
Broad Topic: Exercise
Narrower Topic: How has an increased emphasis on the importance of exercise among children impacted childhood obesity rates?
