The 5.23 EFX Precor measures almost anything, except brain waves! Workout time and distance are tracked, strides taken are counted, and record is kept of calories charred per minute. Muscles targeted are singled out, and to cap it all, a useful workout summary forms part of the plan. Two user ID's for entering and retrieving personal training choices, are available in the Precor EFX5.23 Elliptical. Read more about the 5.23 EFX precor elliptical cross trainer here...