spartan up summary

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Spartan Up! by Jeff O’Connell and Joe De Sena (FREE)- Book Summary

Spartan Up! is an exhilarating and inspiring guide that pushes readers to their limits and encourages them to…

Cross-train in martial arts, movement, and functional fitness. Travel abroad to train in a foreign dojo. Learn practical street-smart hacks. And, become a modern-day ninja.

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