The third step in creating a summary is to condense the main idea and supporting details into a cohesive and concise overview of the text.
Original Summary: In the article "The Benefits of Exercise," the main idea is that regular physical activity can improve both physical and mental health. The author discusses various benefits such as increased cardiovascular health, better mood and energy levels, and reduced risk of chronic diseases. It is important to make exercise a regular part of one's routine in order to experience these positive effects.