From pricey wearable devices to your phone, it has never been easier to track your daily physical activity, or lack of it. And if you're like many Americans — and spend 9-plus hours sitting everyday — chances are you could probably stand to take a few more steps .

But just how many should you aim for if you want to live a longer and healthier life? New research suggests 7,000 is a good target.

Scientists have made big strides in the science of step-taking over the past decade, gathering tons of data.

And no surprise, they find the more you move, the less likely you are to die from cardiovascular disease and other ailments.

But, they've also concluded that the widely-cited target of 10,000 steps is not rooted in solid science — it grew out of a Japanese promotional campaign.

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