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Fitness Apps - The new health aids

A sound mind in a sound body feels better and achieves more. That's the credo of the "Quantified Self" movement, which comes from the United States and is now taking root in Europe.

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The trend to self-optimization could become economically profitable: there are now armbands that measure our pulse and blood pressure. Apps count calories and number of steps we take. The business of digital health aids is booming. Report by Anja Kimmig.