This Interactive Stress Ball Is Better Than Valium

Thanks to an array of health and fitness-tracking devices, we now have the option of constant access to data about our body—on everything from step count to heart beat to stress level. Common wisdom is that this act of self-monitoring makes us more familiar with our bodies and better equipped become healthier or recognize when something is wrong. But what if this ceaseless stream of data is making us less intuitive about what our body actually wants and needs?

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