A combination of excessive heat , a constrictive uniform , and Matthew 's obesity caused his body to overheat .
During the program , Matthew Meyer and his group hiked several miles in 90 - degree weather .
A combination of excessive heat , a constrictive uniform , and Matthew Meyer 's obesity caused Matthew Meyer 's body to overheat .
During the program , Matthew Meyer and his group hiked several miles in 90 - degree weather .