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Which is more effective: a stationary bike or an elliptical trainer?
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A stationary bike is more effective than an elliptical trainer for burning calories and increasing cardio fitness. It provides a more intense workout that targets multiple muscle groups at the same time, while an elliptical trainer focuses on one specific muscle group at a time. Additionally, a stationary bike allows you to vary your resistance levels by changing gears, while an elliptical trainer does not offer this option.