We tested an elite runner who finished a marathon in 2:54:23 last year, unofficially the fastest time on record for a male over the age of 70. [Photo credit: Ashley Barnas] (2 min read, 3 min video)
Read moreHOW OUR BODY STAYS COOL IN THE HEAT AND WHAT CHANGES AS WE AGE
Heat waves are growing increasingly intense and frequent. Read more to learn about how our body deals with the heat. This post was originally featured on "I Spy Physiology" on August 8th, 2019. (2 min read)
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