On Tuesday, with a heat index that rose as high as 108 degrees, a 16-year-old boy collapsed and died during his first day of practice with a high school football team in Omaha, WOWT reported. Last month in Macon, Ga., a 15-year-old died after he fell to the ground during a football practice, the Telegraph reported. Another high school football player died in Piggott, Ark., last August, after the 16-year-old’s organs began to fail following extreme heat stroke, KAIT reported.