Sensing applications for exercise machines are described. An example sensing application for profiling a workout session of an exercise machine comprises selecting at least one workout parameter or inputting at least one physical characteristic of a user and operating the exercise machine in compliance with the at least one workout parameter selected. The method further comprising reading output signal values from a sensor in which the output signals are generated by a user impact to the exercise machine during the exercise session and processing the output signals. The method further comprising determining workout matrices to profile the exercise session using the processed output signals and providing feedback information based on the workout matrices.