Squint your eyes while looking at the lineup of fitness gadgets at International CES this year, and they become almost indiscernible — that’s because they basically all do the same thing. Little wearable gadgets that clip onto your clothing or wrap around your wrist, diligently calculating your calorie consumption based on your body movements or heart rate. These devices are great for managing body weight, but what if you’re interested in monitoring your body’s muscle composition?
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