Designed to be lightweight and cheap to produce, the robotic bicep upgrade uses a (mostly) aluminum frame, battery-powered DC motor, cable drive system, racket braking and thumbstick controller for movement, with a BeagleBone board supervising the electronics that pull it all together.

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The battery system is capable of handling multiple DC Fast Charges daily.

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But one could imagine switching to a system like the one in Washington DC, where fares are regulated, but anyone who meets minimum service criteria can go into the taxi business.

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But Dr Franco Lori from the Research Institute for Genetic and Human Therapy in Washington DC has been investigating whether interruptions in treatment might actually boost the immune system.

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