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Fitness Nutrition 102: How to Lose Fat and Build Muscle Fast (Udemy.com)

Understanding Nutrition Principals, Calories, Macronutrients, and How to Workout Properly to Build Muscle or Lose Fat

Created by: Bryan Guerra

Last updated August 2026

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What you will learn

  • How to Lose Fat
  • How to Build Muscle
  • Nutrition Principals
  • How to Use Cardio the Right Way
  • How to Apply Nutrition to Your Fitness Goals to Achieve Them Faster
  • How to Improve Your Body Composition
  • How to calculate & personalize calories for anyone & any goals
  • How to calculate macro nutrient ratios for anyone & any goals
  • And much much more!

How it compares

Against the other 662 rated Udemy courses in Health & Fitness on CourseDuck:

  • Rating4.1 out of 5higher than 1% of them
  • Reviews199#385 of 663 by number of reviews
  • Length6 hourslonger than 79% of them
  • Last updatedAugust 2026more recently than 91% of them

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Course Description

Losing fat is hard. Building muscle is hard.

But it becomes dramatically easier when you truly understand nutrition and how it applies to your fitness goals.

Many people spend years trying to lose weight, build muscle, or improve their overall fitness without ever reaching the results they want. They try different workout programs, follow random diets they see online, or jump from one trend to the next.

Yet despite all that effort, their progress remains slow or inconsistent.

Why does this happen?

In most cases, the missing piece isn’t effort—it’s understanding nutrition.

Nutrition is the foundation of every successful fitness transformation. Whether your goal is fat loss, muscle growth, improved performance, or simply feeling healthier and more energetic, what you eat plays a critical role in determining your results.

When you understand how calories, macronutrients, and food choices affect your body, everything becomes much clearer. Instead of guessing what you should eat or following restrictive diets that are impossible to maintain, you’ll learn how to build a sustainable nutrition strategy that actually works for you.

In this course, you’ll learn the essential principles of fitness nutrition and how to apply them to your own goals. You’ll discover how to structure your diet, avoid common mistakes, and create habits that support long-term progress.

If you're tired of guessing and ready to finally understand how nutrition impacts your results, enroll today and start building the knowledge you need to reach your fitness goals with confidence.

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Instructor Details

Bryan Guerra

Bryan Guerra is the Founder of Invert Media. Invert Media is an Online Education Company. It's mission is to make high quality education affordable and accessible to the entire world.


He runs a successful eCommerce Business, creates content and courses to educate aspiring Entrepreneurs, and loves his wife and his dog. Feel free to message him, he’s always willing to help…

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Reviews

4.1

199 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Gary O’Toole on 5/31/2021

Very informative, easy to follow and incredibly relevant information. Great course

By Kuldeep Singh on 6/17/2020

i understanding tha course very well....and this 4/5 rating is compulsory because ist very good add

By Pratik Jagriti on 5/26/2020

The course was good enough to give a general view over nutrition planning and briefing about the basics components in loosing fat and building muscle from nutrition point of view.

By Henry Ondieki on 5/24/2020

I am halfway through the course and I like its simplicity and applicability. Very good content.

By Mr Samar Chopra on 5/20/2020

Didnt need to be that long. Could have achieved the same knowledge transfer in half the time. Waffled on for no reason and seemed like this was done in the first take and not reviewed

By Nilesh nandeshwar on 5/20/2020

I am very happy. I would congratulate and thanks to udemy school and specifically Bryan to teach us as simply as he can. In India here is lockdown and I am trying to loose fat so I was using BRO SCIENCE till yesterday but today I know the basics of colorie. Surely I will apply to myself first and would love share with as much as possible. Very very thanks to Bryan. And love from India.

By Jonathan on 12/10/2019

Great course. I would have likes a bit more on having a ballanced food nutrition though.

By Giuseppe Van Campenhout on 9/3/2019

For complete beginners the course is most certainly clear and contains all the necessary info. Once you have some background, you know all the stuff handled here.

By Daljeet Singh Jabbal on 8/29/2019

I am fortunate to join your course and I enjoyed the lessons and lectures. I feel that you are a very good instructor and the way you are covering the materials so well. Your course provided me with the knowledge and confidence in the fitness segments. I strongly recommend your course to others who wants to be successful in the fitness industries.

By Mónica Rivero on 1/22/2019

Para personas que nunca han tenido contacto con el mundo del fitness o la nutrición está bien, pero llegados a la segunda lección incluso para novatos quizás sea demasiado básico.

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Overall Score : 82 / 100