To implement the IEAR mechanism, we develop an experimental platform (Figure S2a) that mainly consists of an air pump and an air tank (1 L) to provide compressed air, a valve island fabricated by a set of solenoid valves to control the rhythmic actuation of m-SPAs, and a dSPACE controller (sampling frequency, 1 kHz) to operate the ON/OFF states of the solenoid valves. The detailed air passage network of a three-channel valve island is presented in Figure S2b.