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⟩ What is Energy Systems Development?

ESD is the cardiovascular component of Core Performance training programs. The intensity of the workouts is broken up into three different heart rate zones, which are differentiated by color: Yellow is easy/recovery, green is moderate/strength, and red is hard/power. Instead of slow, plodding workouts, ESD will have your muscles, nervous system, and hormones acting together to help your body work as efficiently as possible.

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