With stationary bikes, the calorie burn is heavily dependent on the resistance level.
The bike knows your resistance level, while Spark is just making broad assumptions about resistance.
If the bikes estimate is low, this is probably because you were using a low resistance level. And in which case, there is good reason to go with the bikes estimate on this one.
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.
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