Author, fitness model, and trainer Kirk Charles, NASM-CPT CES, knows
Read moreThe Mountain Climber Is the Ideal Core Challenge for Men Over 40

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Author, fitness model, and trainer Kirk Charles, NASM-CPT CES, knows
Read moreIn the latest video chronicling his training, YouTube’s Geek Climber
Read moreProfessional climber Magnus Midtbø is always looking for a training
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