Insanity: The rise of the super-charged home work out

Insanity came along at the right time. A time when Jane Fondaesque at-home workouts were as out of style as bell bottoms, but people working longer hours and having little time to hit the gym were open to an intense, yet convenient program. In 2011 Americans were spending $1.2 billion a year on liposuction; $6 billion on Yoga studios and $24 billion on gym memberships. Maybe, people were ready for effort-driven results. 

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