Justin Rentzke | Substack

Justin Rentzke

ONE GREAT PERFORMANCE. Founder of K_CAP & K_COPY and developer of the 1GP concept. Lifting weights and cooking steaks. Join my telegram group @keurboomcapital for daily high performance insight. TRAIN.BRAIN.SUSTAIN everyday.

One Great Performance

One Great Performance

By Justin Rentzke

My personal Substack

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