The challenges are inspired by Dwayne Johnson's real, inhuman workouts.
Scott Doolan, 28, was paralysed from the waist down as a teenager.
In 1960, President-elect John F. Kennedy wrote an article for Sports Illustrated titled "The Soft American," warning that the nation was producing too many large, doughy boys. For better and for worse, his ideas continue to resonate.
Vladimir Putin announced plans to use money left over from the Sochi Olympics — seriously — to revive a Soviet-era physical fitness program.