Power-saving control module for a body training machine

A power-saving control module for a body training machine has a controller (21), a first electric switch (22) and a power supply (23). The controller (21) is connected to the body training machine for receiving a first trigger signal. The first electric switch (22) is connected between the body training machine and a power source. When the controller (21) does not receive the first trigger signal, which means the body training machine is in a standby state, the controller (21) determines whether a standby time of the body training machine exceeds a threshold time. When the standby time exceeds the threshold time, the controller (21) generates a turn-off signal to the first electric switch (22). The first electric switch (22) then disconnects the body training machine from the power source. Hence, the power consumption of the standby body training machine decreases.