Exos | Formerly Core Performance

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Energy System Development

Core Performance Endurance Book

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Core Performance Endurance Book

As the third installment in Mark Verstegen’s Core Performance series, the Endurance book offers a new application of the workout program designed specifically for the endurance athlete and focused intently on the muscles of the core – the shoulders, hips and midsection.

Core Performance Endurance DVD

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Core Performance Endurance DVD

Improve your endurance with instructional video featuring Mark Verstegen, exercise programs, and a complete recovery and nutrition program.