Download MacroFactor 2 weeks free: https://bit.ly/jeffmacrofactor (use code JEFF)

Get my book The Muscle Ladder: https://jeffnippard.com/pages/the-muscle-ladder

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I have two things that will help you crush your fitness goals:

1. My Free Training Program Quiz: https://jeffnippard.com/pages/quiz (figure out which program is best for you)

2. My Smart Nutrition App: http://bit.ly/jeffmacrofactor (Use code JEFF for a free 2 week trial)

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In this video, I asked strangers to guess which of eight guys they thought were natural and which were on steroids, just by looking at them. All eight had varying levels of muscularity, and based on the responses, I identified seven key features that can make someone look enhanced, even if they’re completely natural. I also blood tested every subject and reveal the results at the end.

References:

History of Steroids

https://pubmed.ncbi.nlm.nih.gov/30959485/

https://jamanetwork.com/journals/jama/article-abstract/271109

https://www.huffpost.com/entry/andropause_b_1925784

https://slate.com/culture/2005/02/the-doctor-who-brought-steroids-to-america.html

https://www.britannica.com/biography/Eugen-Sandow

FFMI Studies

https://pubmed.ncbi.nlm.nih.gov/7496846/

https://pubmed.ncbi.nlm.nih.gov/27930454/

Rate of Muscle Growth

https://pmc.ncbi.nlm.nih.gov/articles/PMC7068252/

FFMI Reference Values

https://pubmed.ncbi.nlm.nih.gov/18206273/

Variability in Muscle Growth

https://pubmed.ncbi.nlm.nih.gov/15947721/

FFMI Table For Women (Assuming 20% bodyfat and 20 FFMI)

5’0” - 120 lbs

5’3” - 135 lbs

5’6” - 150 lbs

5’9” - 165 lbs

Timestamps:

0:00 - Natty or not: How to figure out natural muscular potential

1:14 - Chapter 1: History

5:18 - Chapter 2: Science

12:45 - Chapter 3: Common Sense

15:41 - How big can you get without steroids?

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Written by Jeff Nippard

Produced by Bailey Wood, Bradley Nippard and Jeff Nippard

Filmed by Cam Cline and Meraki Films

Edited by Rickie Ho, Sam Ding and Jeff Nippard

Research and fact checking by Max Edsey

Graphics by Sam Ding and Rickie Ho

Music sourced from Epidemic Sound

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About me: I'm a Canadian natural pro bodybuilder and internationally-qualified powerlifter with a BSc in biochemistry/chemistry and a passion for science. I've been training for 18 years drug-free. I'm 5'5 and fluctuate between 160 lbs (lean) and 180 lbs (bulked).

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Disclaimers: Jeff Nippard is not a doctor or a medical professional. Always consult a physician before starting any exercise program. Use of this information is strictly at your own risk. Jeff Nippard will not assume any liability for direct or indirect losses or damages that may result from the use of information contained in this video including but not limited to economic loss, injury or illness.