Which of the following exercise comparisons is NOT an example of increasing intensity levels?

Jogging versus sprinting, lifting 150 pounds instead of 50 pounds, and cycling uphill instead of on a level surface each clearly increase effort or resistance. Comparing cycling 10 miles with running 10 miles does not by itself show an increase in intensity; distance alone does not tell you how hard either activity is performed. So the comparison that is not an example of increasing intensity is cycling 10 miles versus running 10 miles.

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