Why Matt Schifferle's Overcoming Isometrics Is The Most Bad Ass Cheat Code For Strength

Ladies and gents, welcome, gather ‘round the altar of strength, because today we’re diving into one of my personal favorite courses that’ll make your muscles quake and your nervous system bow in reverence. Matt Schifferle’s Overcoming Isometrics: Isometric Exercises for Building Muscle and Strength isn’t just a book—it’s a manual for developing power, a blueprint, a fucking Excalibur for carving out a physique that screams dominance without ever stepping foot in a gym. If you’re ready to tap into the primal entity dormant in your bones, buckle up—this is gonna be a hell of a ride.  

The Gospel of Isometrics: Strength Without Movement

Let’s cut through the bullshit. The fitness world is a circus of fads—an overwhelming level of "influencers", over the top "gurus", and don’t even get me started on those Youtube Videos where a guy does 1 Pull-Up and acts like he's god's gift to fitness. But amidst the chaos and questionable tactics, Overcoming Isometrics stands like a monolith, unyielding, rooted in the timeless truth that real strength comes from tension, not gimmicks. Schifferle, the mastermind/jedi behind Red Delta Project, doesn’t waste your time with fluff. He delivers a system so potent, it’s like hacking your nervous system to unlock Herculean power.  

Isometrics, for the uninitiated, is the ART of generating maximum muscle tension without movement. Think pushing against an immovable wall, squeezing a strap until your veins pop, or holding a position until your soul screams. It’s not about reps or set schemes—it’s about pure and unadulterated intensity. Schifferle’s approach, specifically overcoming isometrics, takes this to another level. Unlike yielding isometrics (like planks, where you’re fighting gravity), overcoming isometrics pit you against an immovable force—your own body, a doorframe, or a WorldFit IsoTrainer. The result? A neural supercharge that makes every fiber in your body fire like a V8 engine.  

This book isn’t just a guide; it’s a manifesto for those who want to build muscle, forge strength, and defy limitations—whether you’re a grizzled lifter or a 75-year-old vet of Physical Culture reclaiming your vitality. Schifferle’s got no patience for dogmatic approaches, and neither do I. Let’s break down why Overcoming Isometrics is the most badass addition to your training arsenal.  

Why This Book Hits Like a Sledgehammer As If In The Hands Of John Henry

It’s the Ultimate Neural Hack

Schifferle drops a truth bomb: your strength isn’t just about muscle size—it’s about your nervous system’s ability to recruit those muscles. Most workouts—free weights, machines, even calisthenics—only use as much energy as needed to move the load. Overcoming isometrics? They demand EVERYTHING. By pushing or pulling against an immovable object, you’re training your brain to fire every motor unit in your body. It’s like overclocking a computer, except the computer is your goddamn biceps. Readers on Goodreads rave about this. One person, after years of push-ups and squats, said, “A couple weeks in, I am seeing progress that I haven’t seen in years.” That’s not hype—that’s your nervous system waking up and saying, LFG.  

No Gym, Not A Problem

You don’t need a fancy gym membership or a rack of dumbbells to get jacked. Schifferle’s system uses your body, your environment, or cheap tools like straps or an IsoTrainer. Doorframes, countertops, even a sturdy table—your house becomes a fortress of gains. This is perfect for travelers, the busy parents, or the minimalist soldiers of muscle who know real strength, doesn’t need a $5,000 squat rack. A reviewer in their mid-70s, who’d long abandoned heavy weights, picked up this book and started training three times a week. “I already feel physically and mentally better,” they wrote. That’s the power of a system that meets you where you are.  

Injury-Proof Your Gains

Let’s really get real here. If you’re over 30 or 40 (like myself), your body’s probably been through some crazy stuff. Dynamic exercises potentially can be brutal on joints, but isometrics? They’re like a warm hug from a grizzly bear. Schifferle explains how overcoming isometrics let you build strength without risking injury, making them a godsend for older lifters or anyone rehabbing. One reviewer noted, “Isometrics is specifically ideal for older individuals who have various injuries and health issues which make dynamic exercises counterproductive.”  

Practical as AF

Schifferle doesn’t bore you with 300 pages of theory or the history of isometrics (that has come and gone). He gets to the point: how to do it, why it works, and what exercises to start with. The book’s packed with clear illustrations, a 4-step process for building muscle, and a breakdown of muscle chains so you know exactly what you’re targeting. A UK reviewer has said without blinking an eye it's  “Not for those looking for theory or history of isometrics, this book is for people who want a practical guide and just get on and do it.”  

The Mind-Muscle Connection

If you’ve ever watched a powerlifter psych up before a deadlift, you know the mind is the real engine of strength. Schifferle hammers this home with the thunderous force of Thor, emphasizing the mind-muscle connection as the secret sauce of isometrics. By focusing on tension, you’re not just training your body—you’re forging mental toughness. It’s not about looking pretty; it’s about becoming a force of nature.

The Grind Style Calisthenics Vibe

Overcoming Isometrics is part of Schifferle’s Grind Style Calisthenics series, and it’s got that same raw, in your face energy that makes his Red Delta Project YouTube channel a goldmine. He’s not some ivory-tower fitness guru—he’s a dude from Vermont who loves biking, skiing, and Ben & Jerry’s (respect). His approach is rooted in Fitness Independence, the idea that you don’t need to live in a gym or starve yourself to be strong. This book embodies that ethos, giving you tools to train anywhere, anytime, with nothing but your body and a will to dominate.  

On places like Reddit, the bodyweight fitness crowd has been singing Grind Style’s praises. One user, three months into the program, said, “I’m getting a lot out of it… I’ve noticed a big improvement in stability and such.” Another called Schifferle “underrated” and swore by the program’s ability to build strength and muscle. I humbly agree and should be recognized a hell of a lot more. 

The One Critique To Put Into Your Noggin': Keep It Simple, But Not Too Simple

No book’s perfect that's for damn sure and Overcoming Isometrics has one minor flaw. Some readers wanted more scientific depth or detailed programming advice. One wrote, “The book provides very little scientific explanation and very little advice on how to actually program workouts. It’s more of an exercise library.” To be fair, it's a reasonable assumption—if you’re a data nerd or a coach looking for periodization charts, you might need to supplement with other resources. But for most of us? The simplicity is where we thrive. Schifferle gives you the tools and trusts you to wield them. If you need more, his YouTube channel’s got your back.  

How to Wield This Power

So, how do you start? Schifferle lays it out clean:  

Choose Your Weapon Of War: Choose exercises that hit your push, pull, squat, or core chains. Use a strap, a doorframe, or just your own body.  

Max Out Tension: Push or pull against the immovable object for 6-12 seconds, focusing on maximum effort. Rest, repeat.  

Mix It Up: Combine overcoming isometrics with yielding isometrics (like planks) or classic calisthenics for a hybrid workout that’ll leave you feeling like Superman.  

Stay Consistent: 20 minutes, 4-5 times a week, is more than enough for the majority to see gains that’ll shock you like the Emperor's Lightning Strikes on Luke Skywalker.

The book’s got a chapter on Hybrid Isometrics, which is like the cherry on top of the most amazing sundae—a masterclass on blending techniques for ultimate results combining Overcoming & Yielding Isometrics into one beast. Schifferle also includes accessory exercises to target weak spots, so no muscle gets left behind.  

Why This Matters in 2025

In a world obsessed with quick fixes and Instagram filters, Overcoming Isometrics is a rebellion. It’s for those who know strength isn’t bought—it’s built. It’s for the animals who want to train smarter, not harder. And it’s for anyone who’s ever felt stuck, injured, or too damn busy to chase their potential. Schifferle’s book is a reminder that power lies within you, waiting to be unleashed. 

The Verdict: Buy It, Live It, Conquer It

Matt Schifferle’s Overcoming Isometrics is a 5/5 for anyone who wants to get stronger, smarter, and more resilient without the cookie cutter crap. It’s practical, powerful, and perfectly aligned with the raw, unfiltered ethos of Physical Culture.

 Whether you’re a beginner, a seasoned lifter, or a senior looking to reclaim your fire, this book will change how you train. Grab it on Amazon, pair it with Schifferle’s Red Delta Project YouTube vids, and start forging a body that commands respect.  

Now, go push a wall until it begs for mercy. Your inner titan’s waiting.  

Stay mighty, stay gritty, stay unbreakable and be amazingly awesome.

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What Makes Suspension Training One Of The Most Versatile Tools In Fitness?

 When it comes to minimal equipment, it's important to see what can give the greatest benefit for putting the most in your training. Things like Resistance Bands can be very versatile because they weigh practically nothing and can fit into a travel bag easily. That's one of the reasons why I like Suspension Training from the WorldFit Iso Trainer, you can take it anywhere and it easily fits in your pocket basically. When you can have a whole gym that you can take anywhere, there's not a whole lot of excuses to not train and I'm being modest here.

Being able to switch from one exercise to another in the blink of an eye makes training not only interesting but doesn't take a lot of time to get shit done. When you have that at your disposal and courses like Suspension Calisthenics, your entire world is your playground. It may not turn you into Mr. Olympia or some Acrobatic but it can do wonders for your body and mind that you didn't think were possible. Think about it....Being able to channel your creativity into a device that stretches the imagination beyond the core of a typical gym rat. A device that gives you opportunities to better your well-being as well as teaching you how to be your own coach. Not only that, it's AFFORDABLE as hell.

Yes bodyweight exercises are completely free and can be done anywhere and at anytime. You can learn a ton on Youtube and other Social Media that you can't learn in a book, however; it is important to realize that as great as those places are at times, having a knowledgeable course with someone who knows the grind and is fitter than many people his/her age, it isn't hard to find what you may be looking for and that's where I love recommending and teaching you to be aware of who is pretty damn good and who's a POS snake oil numbnuts who's only after your money. 

I understand people need to make a living and it's understandable in many cases to charge people services that cost an arm and a leg because they believe that's what they're worth, even when they look like bean poles or looking like they got inspired by Karen Carpenter's look of Anorexia. There's literally a guy who charges a "collectors" edition for a BOOK for 250 bucks. Paperbacks & Digital Downloads for 400 bucks or 200 for two books. I'm sorry but that's ridiculous as shit and quite frankly, I've seen better quality that was cheaper. This dude is also one of the crudest and sexist guys I've ever come across and doesn't have the balls to see what he's doing to people's hard earned money. Treats people like dirt and hates anyone who isn't fit because at one time he wasn't fit himself, it's Psychology 101, you put out what is a reflection of your own insecurities and shoving people's inadequacies down their throats. The only way that crazy haired and poor excuse of a man stays in business is because people are gullible enough to buy into his bullshit. There are better options folks and you don't have to feel like a loser for it either. 

I'd rather put my faith in a fitness master or knowledgeable trainer that treats people like human beings, gives encouragement and make you feel like hanging with him is one of the most fun things ever. He doesn't treat you like you're worthless, he gives you options and respect along the way without the need to rant on how bad things are and you are a POS. That's what I see in Matt Schifferle of the Red Delta Project. He's one of those guys that makes you feel good about yourself when you think you don't and he doesn't have some kind of agenda to make you feel like his way is the highway and sure as hell doesn't have some kind of ego that makes him hot shit. What he brings to the table is hope, opportunistic in a positive way and makes training interesting and fun to do. Remember the cost of a book in the previous paragraph? Matt's Grind Style Calisthenics Paperback is less than 30 Dollars and has higher quality and knowledge than the other guy's two books combined. With the cost of the WorldFit Iso Trainer, it's still way less than 100 bucks together and you have far more options in terms of exercises than ever and exercises that regular bodyweight styles can't match but can be a great addition to. The cost of the kindle version? Less than 10 bucks. Here's another kicker that really makes me love his work...His Youtube Channel has free workouts and tips that go beyond the books but still have the wherewithal to give you the option and encouragement to get the books. The other guy's channel, doesn't even have the option to comment let alone have the way of learning things from a fitness perspective. Awkward angles, long rants and shoves his ego down people's throats more than a Scientologist Cultist trying to recruit some poor guy. 

What makes Suspension Training one of the most versatile tools in fitness? It gives you the ability to train anywhere, anytime and makes you learn how to control your body from another outlook of bodyweight conditioning. Being serious about getting fit is never a bad thing but it's also important to have fun with it too and you get to play and experiment in ways that make you feel like a kid again. Matt's style of Suspension Training gives you all that and more and is one of the fittest men around today and at 46, he's still getting stronger and fitter. He teaches control and how to apply tension while also being a little quirky and often times nerdy about it but that's what makes him unique and a great asset to the Fitness Industry, he's one of the guys and makes you feel like you can accomplish anything with a little extra. I really cannot say anything bad about the guy, he's likeable and is one strong motherfucker for a bodyweight guy. 

In the wise words of Matt Schifferle....Be fit, live free. Keep being amazingly awesome everyone. 

Getting A Little Stronger And More With The Pulls

 Experimenting has been one of my favorite things to do when it comes to training. Finding ways to get better, get stronger in areas I wasn't strong in and putting on muscle that works in my favor instead of against me. Isometrics is one of the go to methods I've used for years that has been more and more these days helped some weak points in things I've been working on like Pull-Ups and other things. Maybe it's a phase, maybe it isn't even I don't freaking know lol. 

Ever since I hit those 5 Pull-Ups at that Marine booth at the Fairgrounds earlier this summer, something clicked and wanted to see if I can get better. 5 Reps seems to be my plateau but I know I can get stronger. It may be my max reps at the moment but not my total in a workout. As of right now, my best total with the regular pull-ups is 15 which I'm happy with. With Chin-Ups its a total of 32 because in the same workout I did a total of 17 Chin-Ups when I went to the gym that one day which you can see below doing a set of 5 each of the 2 Variations. Not perfect, sure as hell nowhere as good as Jack Lalanne or Matt Schifferle (These are true masters BTW) but got to keep improving right? Isn't that what fitness is truly about, improving little by little?

Pull-Ups were never my strong suit and when it comes to muscle building, they're not the end-all-be-all move to build thick muscles in the back. Some guys can pull it off (pun intended) but other guys can look like a "get that guy a sandwich" type and be "good" at them. If you've ever seen my results, you know that there are other alternatives to building muscle for the back that is still functional and useful. I don't however want to be dogmatic about it because if I did, I would be lying to myself and I'm telling people to work on other things and experiment for themselves what can work. This is more of, what can get me going at this moment in time. 

With The weight loss, the muscle building and the adjustments I've made in my own training, it's something to pursue and see where it leads. Not doing it because it's a Litmus test for the military or something that is required of me, just want to see what I'm capable of. Trying other variations like using the Worldfit Iso Trainer or a Towel to test my grip strength. The towel can be a bitch and it has been some time, like years since I've done Pull-Ups that way but in the video below, I manage a couple that are pretty damn intense but I'm in control and getting my chin over the fists. If I really credit anything that has kept me strong in order to do that it's Isometrics. All those sessions doing 7-12 seconds of intense contractions and muscle control is paying off. I'm not expecting gymnast type results later on, that's not my intention. As a matter of fact, if there's the cream of a crop of an athlete that has dominated the Pull-Up exercise it's either a Gymnast or a Rock Climber hands down. The technique and the muscle control is what makes the Pull-Up great, not just the pull itself. 

It's fun to try certain things even at certain places like at a Park or the gym or wherever. Be serious about what you're getting into but don't be so rigid about it that you can't enjoy the experience. That's what I do my best to preach is that you want to make your training a great experience. You may not always have the motivation to go after it, fuck sometimes my motivation isn't always there but I do what I can and get the most out of what is happening to me in the moment. I may have various emotions going on and I don't want to train for hours at a time but still make the effort to get something done even if its a few minutes. 

If I really had to pick the best methods that have built my back it's Isometrics, the Chest Expander, Sandbags & working with my Fat Gripz. Pull-ups is just another link in the chain and one of the best in training that exercise comes from the Red Delta Project through the Grind Style Calisthenics System. It is by far, one of the top training practices around today and teaches how to utilize alternative equipment that you can take anywhere and work on your exercises. This is something I highly recommend. If anything, this system has been one of my biggest influences on Bodyweight Training and Isometrics.

If you want the most out of your training that is affordable and not some cheap knockoff that is priced higher than Willie Mays' career Batting Average for quite a few of the products "sold" than GSC is right up your ally man. Training should be affordable that has quality standards. Don't get a con artist who sells a 300 dollar book that's easily worth more like 30 or 40 with cheap shit that barely makes anything look believable. That's what I love about Red Delta Project, it sells courses that are reasonable in price, makes others feel inspired to train because of the enthusiasm and positive affirmations along with methods that people can understand down to the smallest detail and channel their own pace. It has expectations for sure but doesn't act like an asshole about it and gives you the feeling of "man I want to hang with this guy" kind of vibe. No ego, no narcissism and sure as hell doesn't rant about how much of a loser people are. It's like a coach that will kick your ass but cheer you on and make you feel good about yourself in the process. It makes the journey an experience you want to have. 

Keep getting stronger everyone and keep being amazingly awesome.