Since leaving college, she'd stayed in shape through the local gym, where she lifted weights and forced herself onto a cardio machine twice a week.
Cardio includes running, walking, biking, and aerobics.
Combating cardio boredom is often a bigger challenge than the actual fatigue.
While most people either do strength training or cardio training, and some people switch days where one day they do strength and the next time they do cardio, a certain type of cardio workout combines both types of workout into one.
In the second hour there's great old time gospel bluegrass and cardio vascular exercise.