Vigorous exercise, rigorous science: What scientists learned from firefighters in training
The 11 young firefighters went through a rigorous training exercise, carrying up to 40 pounds of gear over hilly terrain during a 45-minute training exercise in the California sun. Gloves, helmets, flashlights, goggles, and more weighted them down as they sprinted through the countryside wearing fire-resistant clothing to show they were ready to serve as wildland firefighters.
When the training was over, they immediately went to the medical tent—not to rest and recover but to give samples of their blood, ...










