Because you are working out against the resistance of the machine, rather than your own bodyweight, online trackers such as Spark tend to be less accurate for equipment like the elliptical, as they don't know the speed and resistance settings.
Does the machine not have its own calorie calculator?
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0