Less grimly, electric currents have been used for years by physical therapists to make muscles contract as a way of stimulating and strengthening them.

FORBES: Backrubs From A PDA

Oxygen is the fuel that muscles need to contract.

CNN: Claudication

The information on how much to contract is translated into pulses of electricity that are sent to each of the relevant muscles and bingo!

ECONOMIST: We can rebuild him. We have the technology