Abstract: An improved user monitor 102 is a component of the illustrated monitoring system. This system includes a master data processor in the form of a computer 101 arranged to store physical parameter data for a plurality of users. Each user is provided with a user monitor 102 which is arranged to monitor at least one physical parameter of the user during exercise and store data relating to the physical parameter. This data can subsequently be transmitted to the master data processor by pulse transmission from the user monitor down a telephone line 103. The master data processor then compares the received data with the stored data for the user in order to enable monitoring of the progress of the user in an exercise regimen which has been preset for him.At the end of each exercise, the exercise monitor screen shows an effort rating of "EFFORT 12".The client can alter the number anywhere from 6 to 20 by using the keypad 14 on the face of the exercise monitor.