Study finds 30 minutes of exercise a day not nearly enough

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HOUSTON, TX - Have you finally gotten around to squeezing in that 30-minute daily workout the experts have been blabbing about for years?  Well, guess what-- it ain't enough!

New research published in the journal Circulation finds people who get in 30 minutes a day do not really lower their risk of heart failure too much more than folks who do nothing at all. But people who exercise an hour a day had a 20% lower risk of heart failure. And those who did two hours, 35% lower.

But let's get real. Who has two hours a day to work out?  "It's hard in your 30's to have kids and stay active," says Eric Pearson, a father of five.

Sometimes you just have to do it for you. "My cholesterol and my blood pressure was way up," says dad Mitchell Thompson who started exercising again in June. "My doctor said I need to get back out and get in shape."

Heart disease is the leading cause of death in the U.S., claiming more than 600,000 lives a year. So maybe it's time doctors and groups like the American Heart Association step up their recommendations on daily exercise.

Otherwise, they could be putting us all at risk.