Avoid walking at incline on the treadmill or doing hill sprints / stair running. (rachaelattard.com)
It could also mean one more minute of cardio, one level higher on a stairclimber, or half a percent steeper incline on the treadmill. (hardgainermusclebuilding.com)
Examples of resistance include incline on the treadmill, bike or elliptical. (flippingfifty.com)