Ray Cronise, a former NASA scientist who spent 15 years overseeing experiments aboard shuttles at Marshall Space Flight Center, has been conducting experiments since 2008 to see if cold temperatures have an effect on the metabolism.
In 2008 while watching a televised program on Olympic swimmer, Michael Phelps, Cronise got an idea. The documentary claimed that the swimmer was consuming around 12,000 calories a day while training. That fact didn’t make sense to Cronise considering his own calorie-restricted diet allowed him to have only 12,000 calories per week.
At the time Cronise weighed 209 pounds at 5 feet 9 inches tall, and was trying to get down to 180 pounds. He thought to himself, if Phelps was really consuming that many calories daily and was in the water three hours a day, then something didn’t add up because the swimmer would become a “blob.”
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