Healthy (left) and sarcopenic (right) muscle tissue under a microscope. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

Step aside, Fitbit. Data-driven fitness gadgets have nothing on this: A tiny, wearable microscope catches glimpses of muscles in action. The mini microscope, described in the Dec. 16 Neuron, can ...