Hi, I am Carlos Castro. I created The Strength Community to be able to share my knowledge and experience with coaches and trainers around the world, and those who want to achieve the most in their profession and make their athletes and clients faster, stronger, leaner, and healthier in the quickest and safest way.


Carlos has been certified by some of the greatest strength coaches on the planet and even taught side by side with some of them for almost a decade. Trainers who have taken courses with Carlos in the past remarkably improved their practice, and always have high praises of his knowledge.

Carlos Castro


Dr. Grabrielle Lyon

Not only is Carlos an incredible person, his knowledge surpasses even that. I routinely consult with him on my complex patients regarding the interplay of hormones, performance, weight loss, and physical training. I can not recommend Carlos enough.

Dr. Gabrielle Lyon


Antonios with Carlos
I first met Carlos in person a few years back during my Metabolic Analytics course attendance in Marbella. I was impressed by his calm and patient character, never bored to answer questions and advise on details regarding measurements. I continue to follow Carlos to improve myself and be ahead in the field. Just recently, I’ve completed the first online Anatomy for Trainers course and I have to say that I really loved the way that Carlos presented the material. Of course, the same is true for all the previous webinars in the Strength Community, plenty of detailed and useful information exactly to the point. Thanks a lot Carlos for all the time and effort, the best are yet to come!

Antonios Kakaniaris

Greg Peterson
I’ve had the opportunity to attend classes that Carlos Castro has done as well as working with him on different projects over the past few years. I have always been amazed by his knowledge and ability to educate the trainers and practitioners that attend his workshops. He is very organized, with great subject continuity, much effective and practical workshopping, and eloquently answering questions thoroughly and understandable. Everyone left the seminars fully understanding on how to implement the material and using it to improve the quality of care for their clients. 
We at NutriDyn have been sponsoring educational seminars on nutrition since I started the company in 1973….literally sponsoring thousands of seminars over the years. When we hand out seminar evaluation questionnaires after Carlos's classes, on a scale of 1-5 (5 the top), Carlos rated 5’s across the board. This is true of only the best nutritional lecturers in the world we’ve worked with….Jeff Bland (father of functional medicine), Bob Rakowski, Institute of Functional Medicine education leaders….Mark Houston, Richard Mayfield, Kristi Hughes, Joel Evans, etc. Carlos Castro ranks with the best by my experience doing and sponsoring seminars for over 40 years!


Speed Development for Sports

Speed Development for Sports

SPEED DEVELOPMENT FOR SPORTS Prerequisites: None Duration: 2 days Course Instructor: Ian Danney Summary: The biggest lie that you have …

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Metabolic Balance

METABOLIC BALANCE Prerequisites: None Duration: 3 days Course Instructor: Carlos Castro The Metabolic Balance System is the latest innovation in …

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Neurotransmitter Based Program Design

Neurotransmitter Based Program Design

NEUROTRANSMITTER BASED PROGRAM DESIGN Prerequisites: Structural Assessment, Science of Program Design Duration: 2 days Course Instructor: Carlos Castro Software: This class comes …

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HCl, stomach acid, digest, absorb

HCl: You Are Not What You Eat, But What You Absorb!

June 22, 2020

Reading Time: 8 minutes We’ve always been told that we are what we eat. But if you go a bit further, you’ll understand that …

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A Test Drive to Sarcoplasm Stimulating Training

June 15, 2020

Reading Time: 3 minutes Part of my philosophy on training, and other aspects of life, is to keep eyes and mind wide opened, and …

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Warm-Up: The Ultimate Guide

April 29, 2020

Reading Time: 6 minutes What is warm-up? Warm-up is extremely simple. Stay away from people who overcomplicate things … the typical wannabe coach will …

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Sugar Free Italian Panna Cotta

February 24, 2020

This classic Italian dessert requires only 4 ingredients and about 20 minutes preparation time. It is gluten-free and sugar-free. Quick, …

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High Protein Pancakes

High Protein Pancakes

February 24, 2020

A great recipe for your carb or re-feed day. Bonus: If you are dairy intolerant, I have a special version added …

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Super Simple One Bowl Banana Bread

Super Simple One Bowl Banana Bread

February 24, 2020

Perfect choice for your Carb loading day. It’s also gluten-free, dairy-free, and refined sugar-free! Carlos said it was one the …

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