7. Upper-body cardio
Torch your muscles and lungs like never before with the The Kranking® Training System. This class is like cycling for your arms and gets you training like a professional sailor (ORACLE TEAM USA uses a similar machine) utilizing arm ergometers. One of the only (if not the only) exercise program to focus entirely on the upper body as a way to build cardio fitness, you’ll build a greater aerobic capacity, pack on some serious muscle as well as definition, and burn up to 11 calories a minute.
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