Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Okay, doing a workout literally called "Insanity" doesn't really sound fun.
WEBVTT SYNERGY IS THE KEY WORD....WHEN IT COMES TO TURNING THE CRAZY DAYS OF SUMMER INTO A TIME FOR AN INTENSE WORKOUT. IN FACT...OUR GUEST TELLS US IT'S SO INTENSE...THAT IT'S CALLED "INSANITY." ...
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