The Truth About EPOC and 9 Times Faster Fat Loss
by Scott Tousignant · Filed Under: Home Workouts
There’s no doubt that you’ve come across hyped-up claims from fitness marketers telling you that their workout program will melt fat 9 times faster and will have you burning massive amounts of calories for 48 hours after your workout, which they refer to as the “Afterburn”, or in scientific terms EPOC (excess post-exercise oxygen consumption). These so-called “fat loss guru’s” are passing this information off as fact, and in a very clever and convincing way to the general public. Unfortunately, if you have bought into their claims, you have been mislead and I’m about to show you how.
Preface
You will often times hear the “Afterburn” claims from programs that involve HIIT (High Intensity Interval Training), regular Interval Training, and most recently Metabolic Resistance Training. I want to make it absolutely clear that I am not against these types of training. I have personally incorporated them into my training for nearly a decade.
What I am against is the false, EXAGGERATED claims and misuse of cherry picked data in order to get you to buy into a certain program. Frankly, I feel that there are many fitness professionals whom would benefit a great deal from taking a business ethics 101 course.
The purpose of this post is to set aside the hype and uncover the truth, so you can make an informed decision about the next workout program that you choose to follow.
Exaggerated Claims Based On Flawed Research
According to some cleverly marketed workout programs, you’ll be burning hundreds of calories post-workout all thanks to the afterburn of their high intensity workout. The truth is, that the “Afterburn” that follows a high intensity workout is very minimal. If you are lucky you may burn 50 extra calories and that’s if you are well trained and can actually last through an entire workout at the level of intensity that’s required. The duration that is required to experience this kind of afterburn is not exactly short either.
Now don’t get me wrong, you better believe that any extra calories, even if it is just 50 calories, that I may burn as a result of an afterburn is totally welcome in my eyes. But to me, I’d rather not count on those extra calories being burned and I certainly won’t calculate them into my daily caloric expenditure. Instead, I think of any afterburn effect to be a bonus and don’t really give it a second thought.
…and that’s exactly what I encourage you to do. If you are focused on creating a caloric deficit through exercise, you need to realize that it’s the calories that are being burned during the workout that make the greatest impact. In other words… get your butt moving!
Don’t Just Take My Word For It
I encourage you to educate yourself from a variety of reputable sources who truly dive into this research in a meaningful way… not just to serve their marketing message.
Lyle McDonald is one of the guys whom I trust when it comes to devouring research, explaining it in real world terms, cutting through the B.S. and helping you make an informed decision. I highly recommend that you take a moment to read this article of his where he dissects a study on EPOC…
Effects of Exercise Intensity and Duration on the Excess Post-Exercise Oxygen Consumption
Now what about these workouts supposedly burning fat 9 times faster?
The study that is often referenced when a fitness marketer talks about 9x faster fat loss is one done by Tremblay, Angelo, et al. Impact of exercise intensity on body fatness and skeletal muscle metabolism. Metabolism. Vol 43. no 7 (July). Pp 814-818. 1994. They came to this 9 x faster conclusion in a rather odd manner to say the least. Rather than go into the odd conclusion in this post, I recommend instead that you take a moment to read how Tom Venuto author of Burn The Fat, Feed The Muscle explains it in great detail within this article…
Steady State Cardio 5 X More Effective Than HIIT?
Tom brings up a great point in the above article about how this flawed research is often used… You never hear any of the “fitness guru’s” tell you, that although this study came to the conclusion that Interval Training produced 9x greater fat loss… the results were only .2 pounds in 20 weeks!!!
Holy moly does that ever make me want to do Intervals
Losing .2 pounds in 20 weeks is definitely not sexy, but hey, “Let’s cherry pick some numbers from this study and just roll with the 9x faster fat loss, even though how they arrived at that conclusion is quite frightening.”
Irrelevant Comparisons
The thing that really gets me is that these fitness marketers will use this 9 times greater fat loss from this study which had the participants performing intervals on a cycle ergometer and say that their new breakthrough workout program that includes whacky circus moves will burn fat 9 times faster as well.
Where do they get off making this comparison? As I have mentioned before, I’ve been a participant in one of these University studies on the cycle ergometer and most of us participants felt nauceous, some of us puked, and some of us fainted after the experiment. Needless to say that the workload was extremely intense.
Unless these fitness marketers put their program under a closely monitored study itself and compare it to other programs that have been studied, then you simply cannot say that your program burns ___ times more fat than another program. So basically, the study that they quote is irrelevant to their program.
In the article above, Tom also mentions that you could use this very same study and come to the conclusion that steady start cardio produces 5 times greater weight loss, because the steady state group lost 1.1 pounds during the same 20 week time period.
Obviously in both counts the weight loss or fat loss is not significant. I’m certain that one of the reasons that the loss in body fat or body weight was not significant is because diet was not controlled in this study and very rarely ever is. I guess that you could say that this also proves just how important diet is when it comes to fat loss.
Let’s Put Things Into Perspective
There’s no doubt that the harder you work during a training session, the greater EPOC you will experience.
…But, that EPOC is not nearly as significant as some “fitness guru’s” have led you to believe.
What really matters is the overall calories being burned. Because many of the proponents of these claims are recommending abbreviated workouts as the solution, let’s say that their 20 minute workout burns 250 calories and the EPOC, if they pushed it really hard, is 30 calories. That’s a total of 280 calories.
Now let’s compare it to someone who performs a low intensity workout for 60 minutes and burns 500 calories with next to no EPOC. The low intensity workout still comes ahead by 220 calories… mind you, they had to exercise 3 times as long… and that’s where the appeal is. If you are absolutely pressed for time, than short bouts of high intensity exercise is a great solution for your lifestyle.
The Big Picture
There are some fitness marketers who say that I am wasting my time going for a 30-45 minute daily walk because there is no “Afterburn”. What they fail to recognize is that my daily walk is soooo much more than just a task to burn calories. I walk for active recovery from my strenuous weight training sessions. I walk for stress relief. I walk to prepare for my day. I walk for pure enjoyment.
With the calming and recovery effect of walking I could very well be creating a better environment within my body to burn fat than if I were to do Intervals instead.
If the great Hercules himself, Steve Reeves was still alive I’d love to see these fitness marketers approach him and tell him that walking is a waste of time
Steve, who arguably has one of the greatest natural physiques of all time, was a huge proponent of power walking and even wrote a book on it.
What’s The Best Solution?
The truth is that there is no “BEST Program”. There’s probably thousands of GREAT programs, but what it really boils down to is following a program that suits your lifestyle, personality, and goals.
I’ve personally gone through a variety of training protocols over the years, and all of them were based on my lifestyle and goals at the time. In my teens it was all about bodybuilding. In my mid 20’s it was all about breaking my workouts into small manageable chunks to fit into my hectic work schedule and busy family life. That was when I created the Fat Loss Quickie 10-Minute Metabolism Booster program. The reason that it was so effective for Angie and I was because it was super easy for us to stick to for the long term. It was easy to be consistent with our workouts, which is really the key to long term success. Yes, these workouts provided a nice metabolic boost twice per day, but we sure as heck don’t go around making hyped up and exaggerated claims about the afterburn effect.
The Fat Loss Quickie workouts were first designed for Angie and myself and then we packaged them together for our busy friends who also wanted to get in great shape. But they don’t compare to the results that you would get from my Metabolic Masterpiece Body Sculpting Program, which requires more time investment in the gym, allowing for more exercises to be incorporated into sculpting your body into a work of art.
Metabolic Masterpiece is best suited for someone who enjoys spending 45-60 minutes of focused time in the gym four days per week and posses a type of personality that is fascinated by their ever improving physique. Not only do they want to look amazing, but they want to feel strong as well.
If you love Interval Training, chances are greater that you’ll stick to an interval training program better than any other program. If you love Yoga, you’ll stick to that better than any other program. I really wish we would break free from this, “Mine’s bigger than yours” mentality and do what’s in the best interest of the general public.
Make Nutrition a Top Priority
As demonstrated in the research study above, it doesn’t matter whether you do interval training or low intensity exercise… if your nutrition sucks you can’t expect great results. The nutrition principles that I personally follow are based on the teachings in Tom Venuto’s Burn The Fat, Feed The Muscle. It’s a system that I’ve applied for nearly a decade and I can customize to meet my goals.
Summary
Once again, here are two must read articles on the topic of EPOC that expose the myths and lies that are being pushed on you…
Effects of Exercise Intensity and Duration on the Excess Post-Exercise Oxygen Consumption
Steady State Cardio 5 X More Effective Than HIIT?
If you enjoyed this post you may also enjoy these previous posts where I brought some clarity to other over-hyped claims in the fat loss industry…
HIIT: The Good, The Bad, and The Ugly
The Truth About Fear Driven Nutrition Tactics
Functional Training Myths
I’ve got your best interests at heart. I’m looking out for you. Not much upsets me more than seeing you being mislead by a self proclaimed fitness guru.
If you have any questions at all, please do not hesitate to ask. I’m here for you.
If you have any thoughts or opinions on the topic, I’d love to hear from you. I’m sure that a post like this will ruffle some feathers.
Once again, I’m not against Interval Training or Metabolic Resistance Training in any way shape or form. They are fantastic and fun ways to exercise for many people. What I am against is exaggerated and misleading claims about their effectiveness.
With that being said… train hard, stay focused, and enjoy the journey.
To achieving your limitless potential,
Scott Tousignant
About The Authors
Scott and Angie Tousignant have been helping busy men and women, just like you, transform their body and life for over a decade. This dynamic duo prides themselves on providing a balanced and practical approach that will motivate and inspire you to become the best YOU that you can be.
Scott and Angie have dedicated themselves to sharing their exact workouts, what they eat, and how they stay motivated to continue transforming their body’s and life.
Their line up of body transforming programs includes, Metabolic Masterpiece, Sizzlin’ Circuits, Core Plus More, Girl Empowered, Fat Loss Quickie, and More Love Less Fat.
We’re excited to share in you successful body transformation!












Great timing, Scott. I just received an e:mail about the 9 times faster fat loss with Metabolic Resistance training and HIIT. I’m not familiar with what metabolic resistance training is. But I have read from several sources that HIIT is better than same-pace cardio and gets faster results because it keeps your metabolism high for longer. Never looked into what exactly that means–how much higher for how long and to what benefit (calories burned). Thanks for the eye-opening post.
I think I receive an email every day about from a fitness marketer who talks about the 9x faster fat loss. It doesn’t even matter what kind of program they are talking about, they still like to reference the same study, which throws up a bunch of red flags for me.
Dig into the other two articles that I have in this post… one from Lyle McDonald and one from Tom Venuto. Lyle has a bunch of research reviews on his blog about Steady State cardio vs HIIT. He’s one of the true research guys in the fitness industry and really dives into the science. I recommend that you bookmark his site and check out his articles.
As mentioned in this post, high intensity exercise does keep your metabolism boosted for longer than steady state, but you’ll only be burning a few calories extra… not hundreds. And if you only do HIIT for a short period of time (10-20 minutes) you won’t burn as much calories during the session than if you did steady state for 45-60… so the afterburn is negated.
I love HIIT for fat loss. I use it for variety and the fun factor. However, I don’t count on it for huge afterburn.
You should now be aware of how this data is cherry picked by these fitness marketers and how they leave out a bunch of info, such as the subjects only lost .2 pounds in 20 weeks. They also fail to tell you that the HIIT workouts in many of these studies can last more than an hour. So the session is longer than many steady state workouts. Kinda ironic eh?
I appreciate your feedback and really glad to hear that I provided you with an eye opening experience.
Thanks for taking the time to comment.
HIIT has worked for me more then anything else.
Recently you just seem to be hating on other fitness people in the industry. People have a choice to believe who they want. Not everything you yourself says is fact and works for everyone.
People need to learn to siff the right information out. Those same fitness experts you keep speaking crap of have helped and continue to help people, even like myself eith their information and even motivation.
You also are a help, but your negativity is also demotivating at times.
Thanks for your feedback, and the negativity aspect or tone of these kinds of posts is something that I consider before writing posts like this.
I feel that my readers have a right to know the truth and how they are being mislead. As I mentioned, I am definitely not against HIIT. I incorporate it myself. It’s a great tool, but not nearly as effective as portrayed in the marketing messages.
It’s difficult for the general public to sniff out the B.S. stuff that’s out there, because it’s made to look very convincing. I just feel from an ethical point of view that it’s very wrong for someone to lie in order to sell a product. I don’t like being lied to, especially when I’m making a purchase.
Maybe I let it bother me too much when I see my readers being completely mislead by others. I could just sit on the sideline and keep my mouth shut. But I care too much. If that’s a bad thing and it upsets some people, then that’s something that I’ll just have to live with and I’m fine with that, when I know that the people who see that I have their best interests at heart are happy that I raised my voice.
There’s loads of positivity on this blog. Sometimes though, somethings need to be voiced. I’ll be bringing the positive energy back in the next post.
PS you certainly won’t hear me argue that these programs haven’t helped many people. They definitely have.
I appreciate the constructive criticism. It always makes for a better blog. Feel free to continue voicing your thoughts.
I agree, I am finding I just delete updates about your blog posts when I see the first sentence or two bashing other fit pros. Way too much negativity.
Thanks for the feedback TN. I appreciate you sharing your thoughts and it will have an impact on how I publish future posts.
Scott,
I for one appreciate the information you provide concerning the misinformation of others. I believe it helps me to make better decisions concerning the achievement of my fitness goals. As for some of the others making comments,why are they so defensive of unethical merchandisers? You and Angie keep up the good work. I will remain a loyal follower.
Willie
You made my day Willie. Thanks a million. The purpose of the post was to help my readers make informed decisions and I’m really glad to hear that you appreciate that I’m looking out for your best interests.
I really took VB and TN’s feedback to heart though and I sincerely appreciated the constructive criticism. Frankly, it snapped me into a great mindset moving forward.
i dont really see any negativity in the post rather there is evidence based ,logical approch to analyise recent theories in the field signifying both positive and negative aspects.thank you Scott for your care and alot of times i use these information to decide how i”ll proceed with my diet or workout plans.
Thanks a million for your feedback Huda. It’s great to see that my posts have been of help to you in making your decisions about what programs to use. That is indeed the intention of why I write these posts… to educate and help my readers make informed decisions rather than basing their decisions on marketing hype alone.
I sincerely appreciate you chiming in and sharing your thoughts. Thank you.
I did not see any negativity towards other fitness experts, rather you were addressing some exaggerated claims and trying to shine the light on this. With so many different schools of thoughts out there, it can become overwhelming trying to decide what to do. You summed it up beautifully in the first paragraph of the section titled “What’s the Best Solution”-ultimately people have to choose a program that they will stick with, one that they will enjoy. Some days I walk because my energy level is not up to HIIT levels. Other days I am “full of it” so I can’t wait to do intervals-but that is what works for me.
I also commend you for your tact in responding to the posts that seemed to be offended by your article.
Exactly DJ! Thanks for sharing your personal experience and how you approach your workouts based on energy levels. Sometimes the exaggerated arguments for HIIT are so convincing that people will continue to do HIIT while their body is stressed and fatigued… this can be counter productive. You’ve applied the greatest key to success… AWARENESS and listening to your body. Way to go!
There are countless schools of thought on the best approach to fitness and fat loss… and yes even I get overwhelmed with everything that’s out there. Like I said in the post, it’s the, “Mine’s bigger than yours” mentality that can really upset me. I bet that 90-95% of the programs out there can be incredibly effective when they are applied by the right person. Maybe even 100% of the programs can work. I’ve seen the worst, craziest programs work for people who are so wildly committed to seeing the program through. That says a lot for how important it is to put forth your most honest effort toward a program.
There are some VERY effective workout programs out there that just don’t resonate well with me. I wish that I enjoyed them, because I see the results that some people achieve from them, but I know that I wouldn’t get good results from it, simply because I do not enjoy it at all and my heart wouldn’t be into it.
The only way to truly know how effective a program is for you personally, would be to experiment and give the program your honest committed effort. At the end, if your physique changed and you enjoyed the style, that’s a program that would work for you. But the great thing about this journey is that you shouldn’t stop there. Try another routine or program and see how your body responds to that one. There’s no one size fits all, because if you decide to stick with one program that is effective in the beginning, it will lose its effectiveness over time.
I really appreciate you jumping in and sharing your thoughts on my post and your own personal experiences DJ. It means a lot to me.
Scott,
As usual, great stuff! I do not find any negativity in your posts. I find your posts informative and separating fact from fiction. I have been following you and several other fitness experts for a few years now and have come to trust very few. In fact, I find that many have evolved from excellent sources of information into merely marketing machines.
Being subscribed to probably 15-20 experts, there are only three that I read with regularity, you, Isabel and Geary. Why? Because you three always deliver great, factual information without trying to shove products at us. It also makes me more likely to buy your products when I am looking for something different. I prefer to support those that really have their readers best interests in mind.
So thanks to you and Angie for sharing your knowledge and research and keeping us informed.
Rick
Hi Scott,
I found your article, and the blogs linked to, highly enlightening. I did not perceive excessive neagtivity, noth you and Lyle are at pains to say that you’re NOT saying that HIIT is a waste of time or even that your method is better, you’re pointing out exaggerated claims and putting it in the contenxt of the real people in the real world. I strive for truth as much a fitness and I really value your honest “horses for courses” approach. Some types of training may work better for some people, just as spome types of diet will work better than others for some people. In both cases it is whatever you can stick to consistently (so, usually what you enjoy) that gets you results and that is a larger effect than tweaks in diet composition and traning protocols. It seems likely that these small effects are only likely to only come into play in the fine tuning end of fat loss, which you address in your metabolic masterpiece. For entry level weight and fat loss I think the easy advice is: exercise – just do it. Anything you do it goiong to be better than doing nothing and I love your fresh and enthusiastic posts that give people new ideas and motivate them to try tew things. I think your positivity about all forms of exercise is plain and contagious. Thank you.
Very nice post, and it is interesting how many people are thinking that saying the truth is negativity. My recomendation to them is to read any new book about exercise phisiology and thinking before posting. Congratulations Scott, and I am sure you knew that lot of guys will not be happy
Common sense is sometimes forbidden today. And your post was against missinformation, not against type of training. To someone, who do not want to see, you can not explain the difference between red and green.
All we know that losing weight must be long and gradual, but all this advertisement promises about rapid weight loss can unbalance a lot
Oh, losing weight is one of the hardest thing in this world. I had such a problem, and after becoming fit, I was afraid to eat, ’cause didn’t want to become fat again.