Humans love to measure things, for example temperature, time, distance and calorie intake. Increasingly, we have discovered new ways to apply these measurements to our own bodies. New technologies have allowed us to collect this data more precisely than before and also, perhaps more importantly, to have these measurements available at all times. “Worrying” about our body has become second nature to us so much that we may not even realize how much of our time revolves around tracking ourselves. Every January, magazines, websites, and social media outdo each other in giving weight-loss advice and fueling a guilty conscience. So we are forced to consider working on our “beach body” for the summer. Starting a diet, working out, getting in…

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“I track myself, therefore I am” is perhaps the most fitting way to describe the basic idea behind the Quantified Self movement which has gained popularity all over the world in recent years. Increasingly, people have started to record and measure their own body-related data, tracking changes over time in metrics such as body weight, blood pressure, caloric expenditure, and the ever-present Body-Mass-Index (BMI). Simultaneously, the sale corresponding apps, sensors, smartwatches, and weighing scales that provide the technical means to collect this data has experienced a continuing surge. The sensors on Nike+ devices, for example, track movement, distance, and speed during physical activities such as running. Apparently, people love collecting these data, fueled by the promise of becoming slimmer and…

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