How hot is too hot for the human body? Our lab found heat + humidity gets dangerous faster than many people realize
- Written by W. Larry Kenney, Professor of Physiology, Kinesiology and Human Performance, Penn State

Heat waves are becoming supercharged as the climate changes – lasting longer, becoming more frequent and getting just plain hotter. One question a lot of people are asking is: “When will it get too hot for normal daily activity as we know it, even for young,...