Why Exercise Actually Makes You Fatter

According to the Centers for Disease Control and Prevention, nearly 35 percent of Americans are obese. That's 78.6 million people.

We talked to Gary Taubes, an expert on obesity who wrote the bestselling book "Why We Get Fat." He says the idea that exercising and physical activity can cure obesity is incorrect.

Produced by Graham Flanagan. Camera by Justin Gmoser.

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