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energy systems

  1. Other/Mixed Energy systems, PTTP, looking for a new program

    I’m currently recovering from high intensity workouts and looking for a new way to train. Here are some of my questions: 1. Which energy systems are used/developed in PTTP 2x5 routine? 2. Is this program enough for building “general endurance/work capacity”? 3. Do I need to supplement this...
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