“I’M 39,” says the shirtless man on the TV commercial, “and I’m in better shape now than when I was a swimmer in high school.”

He smiles and flexes his large, well-defined muscles, as the announcer extols the virtues of Insanity, the regimen he claims to have used to achieve this level of fitness. It is also, we are told, “the hardest workout ever put on TV!”  View the full story online at : http://nyti.ms/Pr1Vti.