write a hypothesis that explains why the marathon runners are collapsing and possibly dying

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1. Runners collapsing on track after running

   

2. Why Do Marathon Runners Collapse?

   

3. N.Y.C. Marathon Runners Helped Off the Course After Collapsing

   

4. I hear a lot about runners collapsing after a racing event. Why does this happen and what can I

   

5. Why Do Marathon Runners & Triathletes Collapse? (Risks & Prevention Tips)

   

6. Solved Marathon Runners A researcher wants to study the