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Dr Juan Carlos Cassano aka The Golden Era Bookworm is a medical scientist and is known throughout the world as an authority in the History of Physical Culture and Bodybuilding. His mission is to teach the practices of Bodybuilding and Physical Culture as they were originally practiced for the purpose of achieving strength and health to lead a long, successful and happy life. This is what Physical Culture and Classic Bodybuilding was always about.

He grew up in Sydney Australia where his fascination in both medical science and bodybuilding began. He graduated in the University of Technology in 2001 with a Masters of Science in Biomedical Science, then was awarded his PhD in Biochemistry at the University of Sydney in 2008. More recently, he was awarded a Diploma of Advanced Laboratory Medicine at University of Zurich which is ranked as the 6th best university in the world.

Dr Juan Carlos Cassano has over 25 years of experience in medical research having worked extensively in the pharmaceutical, biotech and clinical settings. On top of that, he has lectured medical doctors, physiotherapists, nurses and sports professionals in universities and research institutes worldwide for over 25 years. This combination of knowledge is almost unparalleled in the world of fitness.  

Whilst pursuing his academic career, he achieved his Gym Instructor and Personal Coaching Certificate from the Australian Fitness Network in 1998 and has been helping people achieve their fitness goals for over 25 years. He is also a black belt in different styles of martial arts and has also taught yoga extensively since 2003. Since 2017, Dr Juan Carlos Cassano has also crafted cutting-edge supplement formulations for leading supplement companies such as NSP Nutrition, Old School Labs and NutriEst.

Here is what Dr Juan Carlos Cassano has to say about Golden Era Bookworm:

"This website serves two purposes. It exists so that I can share the knowledge of the past and educate people on effective bodybuilding methods, as well as to help as many people achieve their fitness and health goals. I love helping people achieve their goals as it has a ripple effect that can be passed forward. Combined with my bodybuilding knowledge on diet and training and my medical science background, I can help you achieve your goals. Whether you simply wish to improve your health and physique, or wish to become and compete as a Classic Bodybuilder, I would love to help you along your journey".

Geared towards the Novice and Beginner, this program takes

you through several guided stages of development.

The Golden Era Method of gaining mass followed by shaping

is vital in gaining a Classic Physique.

For those who wish to gain muscle and lose fat fast, this program

is for you. This program is also flexible in time, allowing you to

choose a program that suits you, and therefore is ideally suited

to the busy professional and/or family man.

Looking to achieve that massive Rib Cage, that was

THE TRADEMARK Old School Bodybuilding look?

Then this program is for you! My Rib Cage Expansion program

will increase the mobility and expand your rib cage using tried

and tested techniques from the Golden Era!

Bronze Era techniques such as Muscle Control and

The Light Dumbbell System are now available in our
online coaching program.

Classic Cut

Some of the Courses on Offer

Novice to Classic


Rib Cage Expansion


Muscle Control &
Light DB System



Custom programs also available!

If you want to get started, click the link for a FREE Consultation: 


"Dr Carlos is an excellent coach- detail oriented and very well versed in old school bodybuilding training.

I had fast, natural results (particularly from the rib cage expansion programme) which boosted my overall musculature. He was on hand to answer any questions whatsoever- so his services certainly offer great value. Many thanks!"



"When I first found Carlos, it was through his YouTube channel Golden era bookworm.

I was watching his videos about how to do bodybuilding and his interview with legends of the bodybuilding sport all the time both in and out of the gym. The videos gave me so much motivation. But it was when I learned that he offered Coaching and me deciding to make him my coach that my true Golden era/ Classic physique journey started.

I got to really see what kind of standard that made the legends like Arnold , Serge Nubret , Robby Robinson , Frank Zane, Tom Platz and more. Through this journey I’ve been on for about 1.5 year I have seen big changes, all naturally in a way I didn’t think possible for my physique. I have learned so much , from us having video sessions each Sunday, through each workout where I’ve been able to feel what the Golden era principles of building a beautiful and strong physique is all about. My coach has always been cheering me on even when I’ve doubted my ability, and available whenever I’ve needed and patient as well with me learning the ropes. He has become not only my coach but also a brother.

Anyone wanting to become their best naturally should consider Coach Carlos."


Carlos' training is the best and greatest concerning the classic/vintage physique. I trust no other for who else has a collection enough to one day make a museum? This extensive collection contains magazines, old school equipment, articles, booklets and testimonies of those from the time of old. He has secrets to look like a 1950’s/1960’s Mr.Universe. He surely knows how to form a beautiful, proportioned, and well balanced physique that not everyone has obtained, or will obtain. In a time where not everyone prioritizes symmetry, proportion and beauty in the body, Golden Era Bookworm does. This is why I trust him.


Like many others, my journey with Carlos starts with his YouTube channel. Carlos’ Golden Era Bookworm videos inspired me to prioritize physical culture and adopt a healthier lifestyle. After losing 25lbs (~12kgs) on my own I started to plateau and knew I needed something more. That’s when I reached out to Carlos directly to coach me. After only one month of working with Carlos, I’ve cut a considerable amount of fat and gained definition I’ve never seen before. I feel much healthier and have more confidence in myself and my physical ability. All of this thanks to Carlos and the Golden Era Bookworm community he has so meticulously curated. My journey is far from over but for anyone looking to take the next step I cannot recommend Carlos enough. You will not be disappointed.


"Carlos started working with me as my personal trainer about 8 months ago. My goal was to lose about 10 kg in overall body-weight, while building up strength and muscle to end up with a six-pack prior to my vacation. Carlos is incredibly knowledgeable not only in the area of weight training / body building, but literally is a walking encyclopedia on subjects of physiology, nutrition, fitness and mental focus. There is no way I would have been able to reach my goal without Carlos' carefully customized work-out schedule tailored to my specific situation, including the nutritional aspects. He kept me accountable in a very professional manner throughout the training period and patiently worked with me when adjustments needed to be made. One of the key aspects I truly appreciate about the approach Carlos took, was to make sure that I NEVER overdid anything, making sure my physical abilities were challenged but not exposed to physical harm. I would absolutely and without any hesitation recommend Carlos as a personal trainer, who is now also a good friend to me! I look forward to spending many more hours together with him in and outside the gym!  Thanks mate!!! Couldn't have done it without you!!"


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