"The difference is, everyone being tested here is a volunteer," he said. "And we're saving lives."
New heat lab at UConn will test limits of athletes, soldiers →
"There's so much potential for things to go wrong that I would really want people to think twice before doing something like that," said Douglas Casa, executive director of the Korey Stringer Institute, which works to improve safety for athletes.
Family of teen who died in football drill plans $15M suit →
