Which area of the physical activity pyramid can be most easily incorporated into an individual's everyday activities?

Lifestyle Physical Activities. The very bottom of the pyramid, which involves your everyday movement such as walking, gardening, and other chores. 

Eating right and exercising daily

Whats important is to eat healthy food to prevent heart disease. another why not to get heart disease is to always exercise in a timely manner. lastly, always stay active and go to the doctor for checkups just in case.