Jeff Csatari Books

The big book of uncommon knowledge

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Based on the popular monthly feature, Uncommon Knowledge in Men's Health magazine, this book is the ultimate reference guide for the man who wants to know how to do everything better. It's a treas...

"You can have a healthier and leaner body in just 14 days. And the health benefits start on Day 1 when you begin to reduce the amount of added sugars in your diet with The 14-Day No Sugar Diet. Obe...

Testosterone Transformation

By Myatt Murphy, Jeff Csatari

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14 Day No Sugar Diet

By Jeff Csatari

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7 Day Smoothie Diet

By Jeff Csatari

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Testosterone Transformation

By Myatt Murphy, Jeff Csatari

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A groundbreaking workout and diet plan that replenishes a man's testosterone levels, rebuilds his body, and remakes his lifeTestosterone is the most crucial hormone in the male body--and every man'...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.