 Cervantes Suarez says the six men killed were on a break when the bridge went down. Most were friends and family members of his. Among them were his nephew and brother-in-law. The weather is so hot lately, it can make your head hurt. WTOP's Lynn Bowie spoke to a doctor about why the heat can trigger a headache or a migraine. The main reason is dehydration. We may be drinking how much water we normally drink, but when we're outside and it's hot and we're sweating, we need to be drinking more water.